National Curriculum Statement (NCS)

                                   Curriculum and Assessment
                                         Policy Statement
LIFE SCIENCES




                         Further Education and Training Phase
                                    Grades 10-12




        basic education
        Department:
        Basic Education
        REPUBLIC OF SOUTH AFRICA
Curriculum and Assessment Policy Statement
                  Grades 10-12



                  life sciences




CAPS
LIFE SCIENCES GRADES 10-12




Department of Basic Education


222 Struben Street
Private Bag X895
Pretoria 0001
South Africa
Tel: +27 12 357 3000
Fax: +27 12 323 0601



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Cape Town 8000
South Africa
Tel: +27 21 465 1701
Fax: +27 21 461 8110
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© 2011 Department of Basic Education



Isbn: 978-1-4315-0578-4


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Printed by: Government Printing Works


                     CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
LIFE SCIENCES GRADES 10-12
FOREWORD by thE ministER

                                 Our national curriculum is the culmination of our efforts over a period of seventeen
                                 years to transform the curriculum bequeathed to us by apartheid. From the start of
                                 democracy we have built our curriculum on the values that inspired our Constitution
                                 (Act 108 of 1996). the Preamble to the Constitution states that the aims of the
                                 Constitution are to:

                                 •	    heal	 the	 divisions	 of	 the	 past	 and	 establish	 a	 society	 based	 on	 democratic	
                                       values, social justice and fundamental human rights;

                                 •	    improve	the	quality	of	life	of	all	citizens	and	free	the	potential	of	each	person;

                                 •	    lay	the	foundations	for	a	democratic	and	open	society	in	which	government	is	
                                       based	on	the	will	of	the	people	and	every	citizen	is	equally	protected	by	law;	
                                       and

•	    build	a	united	and	democratic	South	Africa	able	to	take	its	rightful	place	as	a	sovereign	state	in	the	family	of	
      nations.

Education and the curriculum have an important role to play in realising these aims.

in 1997 we introduced outcomes-based education to overcome the curricular divisions of the past, but the experience
of	implementation	prompted	a	review	in	2000.	This	led	to	the	first	curriculum	revision:	the	Revised National Curriculum
Statement Grades R-9 and the National Curriculum Statement Grades 10-12 (2002).

Ongoing implementation challenges resulted in another review in 2009 and we revised the Revised National
Curriculum Statement (2002) and the National Curriculum Statement Grades 10-12 to produce this document.

From 2012 the two national Curriculum statements, for Grades R-9 and Grades 10-12 respectively, are combined
in	a	single	document	and	will	simply	be	known	as	the	National Curriculum Statement Grades R-12. the National
Curriculum Statement for Grades R-12 builds on the previous curriculum but also updates it and aims to provide
clearer	specification	of	what	is	to	be	taught	and	learnt	on	a	term-by-term	basis.	

the National Curriculum Statement Grades R-12 represents a policy statement for learning and teaching in south
African schools and comprises of the following:

(a)   Curriculum and Assessment Policy statements (CAPs) for all approved subjects listed in this document;

(b)   National policy pertaining to the programme and promotion requirements of the National Curriculum Statement
      Grades R-12; and

(c)   National Protocol for Assessment Grades R-12.




MRS ANGIE MOTSHEKGA, MP
MINISTER OF BASIC EDUCATION



CAPS
LIFE SCIENCES GRADES 10-12




         CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
LIFE SCIENCES GRADES 10-12
CONTENTS

Section 1: INTRODUCTION TO THE CURRICULUM AND ASSESSMENT POLICY STATEMENTS... 3

1.1	Background......................................................................................................................................................3

1.2	Overview...........................................................................................................................................................3

1.3	     General Aims of the South African Curriculum.............................................................................................4

1.4	Time Allocation.................................................................................................................................................6

         1.4.1	 Foundation Phase....................................................................................................................................6

         1.4.2	 Intermediate Phase..................................................................................................................................6

         1.4.3	 Senior Phase...........................................................................................................................................7

         1.4.4	 Grades 10-12...........................................................................................................................................7


SECTION 2: INTRODUCTION TO LIFE SCIENCES..........................................................................................8

2.1	     What is Life Sciences?....................................................................................................................................8

2.2	Life Sciences as a School Subject.................................................................................................................9

2.3	The Organisation of the Life Sciences Curriculum.......................................................................................9

2.4	The Purpose of Studying Life Sciences.......................................................................................................12

2.5	     Specific Aims..................................................................................................................................................13

         2.5.1 	Specific Aim 1: Knowing Life Sciences..................................................................................................13

         2.5.2	 Specific Aim 2: Investigating Phenomena in Life Sciences ...................................................................15

         2.5.3	 Specific Aim 3: Appreciating and Understanding the History, Importance and Applications of Life
                   Sciences in Society................................................................................................................................17

         2.5.4	 Developing Language Skills: Reading and Writing................................................................................19

2.6	Time ................................................................................................................................................................19

2.7	Resources ......................................................................................................................................................19


SECTION 3: CONTENT............................................................................................................................ 22

3.1 	Life Sciences for Grade 10: Content............................................................................................................22

3.2 	Life Sciences for Grade 11: Content............................................................................................................39

3.3 	Life Sciences for Grade 12: Content............................................................................................................54


SECTION 4: ASSESSMENT IN LIFE SCIENCES ............................................................................................66

4.1	Introduction....................................................................................................................................................66

4.2	Informal and Daily Assessment ...................................................................................................................66

4.3	Formal Assessment.......................................................................................................................................67




CAPS                                                                                                                                                           1
LIFE SCIENCES GRADES 10-12
4.4	Assessment Requirements for Life Sciences: Grades 10-12....................................................................68

         4.4.1	 Grade 10: Programme of Formal Assessment.......................................................................................68

         4.4.2	 Grade 11: Programme of Formal Assessment.......................................................................................69

         4.4.3	 Grade 12: Programme of Formal Assessment.......................................................................................70

4.5 	End-of-year Examinations.............................................................................................................................71

         4.5.1	 Grade 10................................................................................................................................................71

         4.5.2	 Grade 11................................................................................................................................................72

         4.5.3	 Grade 12................................................................................................................................................73

4.6	Recording and Reporting .............................................................................................................................74

4.7	Moderation of Assessment...........................................................................................................................74

         4.7.1	 Grades 10 and 11...................................................................................................................................74

         4.7.2	 Grade 12................................................................................................................................................75

         4.7.2.1 Formal assessment (school-based assessment - SBA)......................................................................75

4.8	General ...........................................................................................................................................................76




          2               CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
LIFE SCIENCES GRADES 10-12
sECTION 1

INTRODUCTION TO THE Curriculum and Assessment Policy StatementS for LIFE
SCIENCES gradeS 10-12


1.1	Background

The National Curriculum Statement Grades R-12 (NCS) stipulates policy on curriculum and assessment in the
schooling sector.

To improve implementation, the National Curriculum Statement was amended, with the amendments coming into
effect in January 2012. A single comprehensive Curriculum and Assessment Policy document was developed for
each subject to replace Subject Statements, Learning Programme Guidelines and Subject Assessment Guidelines
in Grades R-12.


1.2	Overview

(a)	The National Curriculum Statement Grades R-12 (January 2012) represents a policy statement for learning
       and teaching in South African schools and comprises the following:

       (i)	     Curriculum and Assessment Policy Statements for each approved school subject;

       (ii)	    The policy document, National policy pertaining to the programme and promotion requirements of the
                National Curriculum Statement Grades R-12; and

       (iii)	   The policy document, National Protocol for Assessment Grades R-12 (January 2012).

(b)	The National Curriculum Statement Grades R-12 (January 2012) replaces the two current national curricula
       statements, namely the

       (i)	     Revised National Curriculum Statement Grades R-9, Government Gazette No. 23406 of 31 May 2002,
                and

       (ii)	    National Curriculum Statement Grades 10-12 Government Gazettes, No. 25545 of 6 October 2003 and
                No. 27594 of 17 May 2005.

(c)	   The national curriculum statements contemplated in subparagraphs b(i) and (ii) comprise the following policy
       documents which will be incrementally repealed by the National Curriculum Statement Grades R-12 (January
       2012) during the period 2012-2014:

       (i)	     The Learning Area/Subject Statements, Learning Programme Guidelines and Subject Assessment
                Guidelines for Grades R-9 and Grades 10-12;

       (ii)	    The policy document, National Policy on assessment and qualifications for schools in the General
                Education and Training Band, promulgated in Government Notice No. 124 in Government Gazette No.
                29626 of 12 February 2007;

       (iii)	   The policy document, the National Senior Certificate: A qualification at Level 4 on the National
                Qualifications Framework (NQF), promulgated in Government Gazette No.27819 of 20 July 2005;



CAPS                                                                                                      3
LIFE SCIENCES GRADES 10-12
       (iv)	   The policy document, An addendum to the policy document, the National Senior Certificate: A
               qualification at Level 4 on the National Qualifications Framework (NQF), regarding learners with special
               needs, published in Government Gazette, No.29466 of 11 December 2006, is incorporated in the policy
               document, National policy pertaining to the programme and promotion requirements of the National
               Curriculum Statement Grades R-12; and

       (v)	    The policy document, An addendum to the policy document, the National Senior Certificate: A
               qualification at Level 4 on the National Qualifications Framework (NQF), regarding the National Protocol
               for Assessment (Grades R-12), promulgated in Government Notice No.1267 in Government Gazette
               No. 29467 of 11 December 2006.

(d)	   The policy document, National policy pertaining to the programme and promotion requirements of the
       National Curriculum Statement Grades R-12, and the sections on the Curriculum and Assessment Policy as
       contemplated in Chapters 2, 3 and 4 of this document constitute the norms and standards of the National
       Curriculum Statement Grades R-12. It will therefore, in terms of section 6A of the South African Schools Act,
       1996 (Act No. 84 of 1996,) form the basis for the Minister of Basic Education to determine minimum outcomes
       and standards, as well as the processes and procedures for the assessment of learner achievement to be
       applicable to public and independent schools.


1.3	 General aims of the South African Curriculum

(a)	The National Curriculum Statement Grades R-12 gives expression to the knowledge, skills and values worth
       learning in South African schools. This curriculum aims to ensure that children acquire and apply knowledge
       and skills in ways that are meaningful to their own lives. In this regard, the curriculum promotes knowledge in
       local contexts, while being sensitive to global imperatives.

(b)	   The National Curriculum Statement Grades R-12 serves the purposes of:

       •	 equipping learners, irrespective of their socio-economic background, race, gender, physical ability or
           intellectual ability, with the knowledge, skills and values necessary for self-fulfilment, and meaningful
           participation in society as citizens of a free country;

       •	 providing access to higher education;

       •	 facilitating the transition of learners from education institutions to the workplace; and

       •	 providing employers with a sufficient profile of a learner’s competences.

(c)	   The National Curriculum Statement Grades R-12 is based on the following principles:

       •	 Social transformation: ensuring that the educational imbalances of the past are redressed, and that equal
           educational opportunities are provided for all sections of the population;

       •	 Active and critical learning: encouraging an active and critical approach to learning, rather than rote and
           uncritical learning of given truths;

       •	 High knowledge and high skills: the minimum standards of knowledge and skills to be achieved at each
           grade are specified and set high, achievable standards in all subjects;

       •	 Progression: content and context of each grade shows progression from simple to complex;


       4           CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
LIFE SCIENCES GRADES 10-12
       •	 Human rights, inclusivity, environmental and social justice: infusing the principles and practices of social and
          environmental justice and human rights as defined in the Constitution of the Republic of South Africa. The
          National Curriculum Statement Grades R-12 is sensitive to issues of diversity such as poverty, inequality,
          race, gender, language, age, disability and other factors;

       •	 Valuing indigenous knowledge systems: acknowledging the rich history and heritage of this country as
          important contributors to nurturing the values contained in the Constitution; and

       •	 Credibility, quality and efficiency: providing an education that is comparable in quality, breadth and depth to
          those of other countries.

(d)	   The National Curriculum Statement Grades R-12 aims to produce learners that are able to:

       •	 identify and solve problems and make decisions using critical and creative thinking;

       •	 work effectively as individuals and with others as members of a team;

       •	 organise and manage themselves and their activities responsibly and effectively;

       •	 collect, analyse, organise and critically evaluate information;

       •	 communicate effectively using visual, symbolic and/or language skills in various modes;

       •	 use science and technology effectively and critically showing responsibility towards the environment and
          the health of others; and

       •	 demonstrate an understanding of the world as a set of related systems by recognising that problem solving
          contexts do not exist in isolation.

(e)	   Inclusivity should become a central part of the organisation, planning and teaching at each school. This can
       only happen if all teachers have a sound understanding of how to recognise and address barriers to learning,
       and how to plan for diversity.

	      The key to managing inclusivity is ensuring that barriers are identified and addressed by all the relevant support
       structures within the school community, including teachers, District-Based Support Teams, Institutional-Level
       Support Teams, parents and Special Schools as Resource Centres. To address barriers in the classroom,
       teachers should use various curriculum differentiation strategies such as those included in the Department of
       Basic Education’s Guidelines for Inclusive Teaching and Learning (2010).




CAPS                                                                                                             5
LIFE SCIENCES GRADES 10-12
1.4	Time Allocation

1.4.1	Foundation Phase

(a)	   The instructional time in the Foundation Phase is as follows:

                                                             GRADE R           GRADES 1-2            GRADE 3
                             SUBJECT
                                                             (HOURS)            (HOURS)              (HOURS)
        Home Language                                           10                  8/7                 8/7
        First Additional Language                                                   2/3                 3/4
        Mathematics                                              7                   7                   7
        Life Skills                                              6                   6                   7
        Beginning Knowledge                                     (1)                 (1)                 (2)
        Creative Arts
                                                                (2)                 (2)                 (2)
        Physical Education
                                                                (2)                 (2)                 (2)
        Personal and Social Well-being
                                                                (1)                 (1)                 (1)
        TOTAL                                                   23                  23                  25


(b)	   Instructional time for Grades R, 1 and 2 is 23 hours and for Grade 3 is 25 hours.

(c)	   Ten hours are allocated for languages in Grades R-2 and 11 hours in Grade 3. A maximum of 8 hours and a
       minimum of 7 hours are allocated for Home Language and a minimum of 2 hours and a maximum of 3 hours for
       Additional Language in Grades 1-2. In Grade 3 a maximum of 8 hours and a minimum of 7 hours are allocated
       for Home Language and a minimum of 3 hours and a maximum of 4 hours for First Additional Language.

(d)	   In Life Skills Beginning Knowledge is allocated 1 hour in Grades R-2 and 2 hours as indicated by the hours in
       brackets for Grade 3.

1.4.2	Intermediate Phase

(a)	   The instructional time in the Intermediate Phase is as follows:

                               SUBJECT                                               HOURS
        Home Language                                                                      6
        First Additional Language                                                          5
        Mathematics                                                                        6
        Natural Sciences and Technology                                                    3,5
        Social Sciences                                                                    3
        Life Skills                                                                        4
        Creative Arts                                                                     (1,5)
        Physical Education
                                                                                           (1)
        Personal and Social Well-being
                                                                                          (1,5)
        TOTAL                                                                             27,5




       6              CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
LIFE SCIENCES GRADES 10-12
1.4.3	Senior Phase

(a)	   The instructional time in the Senior Phase is as follows:

                               SUBJECT                                                   HOURS
        Home Language                                                                       5
        First Additional Language                                                           4
        Mathematics                                                                        4,5
        Natural Sciences                                                                    3
        Social Sciences                                                                     3
        Technology                                                                          2
        Economic Management Sciences                                                        2
        Life Orientation                                                                    2
        Creative Arts                                                                       2
        TOTAL                                                                              27,5


1.4.4	 Grades 10-12

(a)	   The instructional time in Grades 10-12 is as follows:

                                    Subject                                    Time allocation per week (hours)
        Home Language                                                                             4.5
        First Additional Language                                                                 4.5
        Mathematics                                                                               4.5
        Life Orientation                                                                          2
        A
         minimum of any three subjects selected from Group B Annexure                      12 (3x4h)
        B, Tables B1-B8 of the policy document, National policy pertaining
        to the programme and promotion requirements of the National
        Curriculum Statement Grades R-12, subject to the provisos
        stipulated in paragraph 28 of the said policy document.
        TOTAL                                                                                    27,5


       The allocated time per week may be utilised only for the minimum required NCS subjects as specified above,
       and may not be used for any additional subjects added to the list of minimum subjects. Should a learner wish
       to offer additional subjects, additional time must be allocated for the offering of these subjects.

	




CAPS                                                                                                         7
LIFE SCIENCES GRADES 10-12
SECTION 2

APPROACHING LIFE SCIENCES


2.1	   What is Life Sciences?

‘Life Sciences’ is the scientific study of living things from molecular level to their interactions with one another and
their environments. To be accepted as a science, it is necessary to use certain methods for broadening existing
knowledge, or discovering new things. These methods must lend themselves to replication and a systematic approach
to scientific inquiry. The methods include formulating hypotheses and carrying out investigations and experiments as
objectively as possible to test these hypotheses. Repeated investigations are carried out and adapted. The methods
and results are analysed, evaluated and debated before the community of scientists accepts them as valid.

Knowledge production in science is an ongoing endeavour that usually happens gradually but, occasionally, knowledge
and insights take a leap forward as new knowledge, or a new theory, replaces what was previously accepted. As
with all knowledge, scientific knowledge changes over time as scientists improve their knowledge and understanding
and as people change their views of the world around them. Scientific investigations are mostly about things that
are poorly understood or not understood at all. Scientists are frequently involved in debates and disagreements. As
more people take on such investigations, they tend to reach consensus about the ways in which the world works. The
science theory that is taught in schools has been tested and is generally accepted. A good teacher will inform learners
of debates and arguments among the scientists who were the first to investigate a phenomenon.

Scientists continue to explore the unknown. They tackle questions to which no-one has definite answers, such as:
‘Why is the climate changing?’; ‘What is causing the universe to expand?’; ‘What causes the Earth’s magnetic field
to change?’; and ‘What, exactly, is the human mind?’. No one knows for sure

By studying and learning about Life Sciences, learners will develop:

•	     their knowledge of key biological concepts, processes, systems and theories;

•	     an ability to critically evaluate and debate scientific issues and processes;

•	     greater awareness of the ways in which biotechnology and knowledge of Life Sciences have benefited
       humankind;

•	     an understanding of the ways in which humans have impacted negatively on the environment and organisms
       living in it;

•	     a deep appreciation of the unique diversity of past and present biomes in Southern Africa and the importance
       of conservation;

•	     an awareness of what it means to be a responsible citizen in terms of the environment and life-style choices
       that they make;

•	     an awareness of South African scientists’ contributions;

•	     scientific skills and ways of thinking scientifically that enable them to see the flaws in pseudo-science in
       popular media; and




       8               CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
LIFE SCIENCES GRADES 10-12
•	     a level of academic and scientific literacy that enables them to read, talk about, write and think about biological
       processes, concepts and investigations.


2.2 	Life Sciences as a School Subject

Life Sciences is the study of life at various levels of organisation and comprises a variety of sub-disciplines, or
specialisations, such as:

•	     Biochemistry;

•	     Biotechnology;

•	     Microbiology;

•	     Genetics;

•	     Zoology;

•	     Botany;

•	     Entomology;

•	     Physiology (plant and animal);

•	     Anatomy (plant and animal);

•	     Morphology (plant and animal);

•	     Taxonomy (plant and animal);

•	     Environmental Studies; and

•	     Sociobiology (animal behaviour).

At school level, all of these sub-disciplines are introduced, to varying degrees, to provide a broad overview of the
subject, Life Sciences. The three main reasons for taking Life Sciences are:

•	     to provide useful knowledge and skills that are needed in everyday life

•	     to expose learners to the scope of biological studies to stimulate interest in and create awareness of possible
       specialisations; and

•	     to provide a sufficient background for further studies in one or more of the biological sub-disciplines.


2.3	   The Organisation of the Life Sciences Curriculum

The Life Sciences content framework is organised according to four ‘knowledge strands’. Knowledge strands are
developed progressively over the three years of FET. These knowledge strands are:

•	     Knowledge Strand 1: Life at the Molecular, Cellular and Tissue Level;

•	     Knowledge Strand 2:Life Processes in Plants and Animals



CAPS                                                                                                              9
LIFE SCIENCES GRADES 10-12
•	      Knowledge Strand 3: Environmental Studies;

•	      Knowledge Strand 4: Diversity, Change and Continuity.

These Knowledge Strands and the topics within each knowledge strand should not be studied separately or
independently. The Knowledge Strands do not need to be taught in the same sequence each year, nor do all four
Knowledge Strands have to be covered in each year. This categorisation is simply a tool for organising the subject
content and they are also not weighted equally. When teaching Life Sciences, it is very important to help learners
to recognise the links between related topics so that they acquire a thorough understanding of the nature and inter-
connectedness of life. These links must also be made across grades.

Life Sciences: Concept and Content Progression

                 Life at molecular,       Life processes in plants    Diversity, change and
 Strands                                                                                            Environmental studies
             cellular, and tissue level         and animals                continuity
             •	 Chemistry of life         •	 Support and transport   •		 Biodiversity and          •		 Biosphere to
                                             systems in plants           classification                ecosystems
                 -	Inorganic
                   compounds              •	 Support systems in      •	 History of life on Earth
                                             animals
                 -	Organic
     Grade         compounds              •	 Transport system in
      10                                     mammals
             •	 Cell - unit of life

             •	 Cell division (mitosis)

             •	 Plant and animal
                tissues
                                          •	 Energy                  •	 Biodiversity -             •	 Population ecology
                                             transformations            classification of
                                                                                                   •	 Human impact on
                                             to support life:           microorganisms
                                                                                                      environment: current
                                             photosynthesis
                                                                     •	 Biodiversity - plants         crises
                                          •	 Animal nutrition
     Grade                                                           •	 Reproduction - plants
      11                                  •	 Energy
                                                                     •	 Biodiversity - animals
                                             transformations:
                                             respiration

                                          •	 Gas exchange

                                          •	 Excretion
             •	 DNA code of Life          •	 Reproduction in         •	 Darwinism and              •	 Human impact on
                                             vertebrates                Natural Selection             environment: current
             •	 RNA and protein
                                                                                                      crises Grade 11
                synthesis                 •	 Human reproduction      •	 Human evolution
     Grade   •	 Meiosis                   •	 Nervous system
      12
                                          •	 Senses

                                          •	 Endocrine system

                                          •	 Homeostasis


The content framework focuses on ideas, skills and concepts as well as connections between them, rather than on
listing the facts and procedures that need to be learned. It also does not prescribe particular instructional strategies
or methodologies. Instead, educators have the freedom to expand concepts and to design and organise learning
experiences according to their local circumstances, including the availability of resources.



        10          CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
LIFE SCIENCES GRADES 10-12
In Grade 10, all four Knowledge Strands are addressed and serve to introduce learners to the four strands.

The recommended Grade 10 teaching sequence for the four Knowledge Strands is:

1.		   Life at Molecular, Cellular and Tissue level (Molecules to organs)

2. 	   Life Processes in Plants and Animals (Processes that sustain life)

3. 	   Environmental Studies (Biosphere to Ecosystems)

4. 	   Diversity, Change and Continuity (History of Life on Earth)

The rationale for this order In Grade 10 is that some areas of South Africa are best suited for an environmental study
during early spring and also because seasonal comparisons in a chosen ecosystem are required where possible.
Some teachers may elect to deal with the Environmental Study at the beginning of the year. However it is important to
retain the sequence of Knowledge Strand 1 before Knowledge Strand 2 and Knowledge Strand 3 before Knowledge
Strand 4. Decisions regarding the sequence (starting the year with Knowledge Strands 1 and 2 or starting the year
with Knowledge Strands 3 and 4) must be made by teachers.

The first section in Grade 10, called “Subject Orientation”, is designed to prepare learners for the FET phase, and is
intended to:

•	     connect what learners learned in the GET (Natural Sciences) with what they will be learning in the FET (Life
       Sciences). The Life Sciences subject builds on knowledge and skills acquired from the Life Sciences knowledge
       areas in GET.

•	     describe how knowledge is built/constructed in science, and introduces the scientific approach that both
       teachers and learners are required to use when teaching and learning Life Sciences.

•	     introduce learners to some basic principles related to science.

•	     familiarise learners with the range of skills that they will need to develop.

The orientation should be done in the first lessons as an introduction but is not part of the assessable curriculum
although the principles and skills will be assessed in the context of specific content during the year. Learners will
have been exposed to similar orientations at the start of the Senior Phase (Grade 7) and at the start of High School
(Grade 8). The orientation on Grade 10 should then simply remind learners of what is expected of them and expand
on some of the aspects.

In Grade 11, three of the four Knowledge Strands are addressed and serve to ensure progression. The content
described in Life at Molecular, Cellular and Tissue level in Grade 10 is used to understand Life Processes in Plant
and Animals in Grade 11 but it is not taught as a separate strand in Grade 11.

The recommended Grade 11 teaching sequence for the three Knowledge Strands is:

1. 	   Diversity, Change and Continuity (Microorganisms, Plants and Animals)

2. 	   Life Processes in Plants and Animals (Processes that sustain life)

3. 	   Environmental Studies (Population Ecology and Human Impact)




CAPS                                                                                                        11
LIFE SCIENCES GRADES 10-12
In Grade 12, three of the four Knowledge Strands are addressed and serve to ensure progression. The content
described in Environmental Studies: Human Impacts (Current Crises) is dealt with in Grade 11 in order to lessen the
pressure in Grade 12 but this Knowledge Strand will be examined in the National Senior Certificate examination at
the end of Grade 12.

The recommended Grade 12 teaching sequence for the four Knowledge Strands is:

1. 	   Life at Molecular, Cellular and Tissue level (DNA and protein synthesis)

2. 	   Life Processes in Plants and Animals (Processes that sustain life)

3. 	   Diversity, Change and Continuity (Darwinsim and Human Evolution)

4. 	   Environmental Studies (Human Impact, taught and assessed in Grade 11)

The identified range of cognitive and practical skills must be taught, and assessed, in an integrated way in the context
provided by the topics in the four Knowledge Strands in each year in the FET band.


2.4	The Purpose of Studying Life Sciences

•	     The development of Scientific Knowledge and Understanding

	      Scientific knowledge and understanding can be used to answer questions about the nature of the living world
       around us. It can prepare learners for economic activity and self-expression and it lays the basis of further
       studies in science and prepares learners for active participation in a democratic society that values human
       rights and promotes acting responsibly towards the environment.

•	     The Development of Science Process Skills (Scientific Investigations)

	      The teaching and learning of science involves the development of a range of process skills that may be used
       in everyday life, in the community and in the workplace. Learners can gain these skills in an environment that
       supports creativity, responsibility and growing confidence. Learners develop the ability to think objectively
       and use different types of reasoning while they use process skills to investigate, reflect, synthesise and
       communicate.

•	     The Development of an Understanding of Science’s Roles in society

	      Both science and technology have made a major impact, both positive and negative, on our world. A careful
       selection of scientific content and the use of a variety of methods to teach and learn science should promote
       the understanding of science as a human activity as well as the history of science and the relationship between
       Life Sciences and other subjects. It also helps learners to understand the contribution of science to social
       justice and societal development as well as the need for using scientific knowledge responsibly in the interest
       of ourselves, society and the environment. Moreover, understanding science also helps us to understand the
       consequences of decisions that involve ethical issues.




       12         CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
LIFE SCIENCES GRADES 10-12
2.5	   Specific Aims

There are three broad subject-specific aims in Life Sciences which relate to the purposes of learning science. These
are:

1. 	   Specific Aim 1, which relates to knowing the subject content (‘theory’);

2. 	   Specific Aim 2, which relates to doing science or practical work and investigations; and

3. 	   Specific Aim 3, which relates to understanding the applications of Life Sciences in everyday life, as well as
       understanding the history of scientific discoveries and the relationship between indigenous knowledge and
       science.

WHAT DO THE THREE AIMS MEAN AND HOW DO THEY RELATE TO ASSESSMENT?

2.5.1 Specific Aim 1: Knowing Life Sciences

(Life Sciences concepts, processes, phenomena, mechanisms, principles, theories, laws, models, etcetera).

Specific Aim 1 involves knowing, understanding, and making meaning of sciences, thereby enabling learners to make
many connections between the ideas and concepts. Making such connections makes it possible for learners to apply
their knowledge in new and unfamiliar contexts. The process of acquiring a deep understanding of science is about
more than just knowing a lot of facts. The scope of knowledge that learners should acquire includes knowledge of the
process skills related to carrying out investigations.

The following cognitive (thinking) skills comprise the range of skills that all learners should develop by working
through the curriculum in a school year. These skills indicate what should be assessed at the appropriate grade
level in a variety of different kinds of assessments. Note that not every skill is assessed in every assessment, but
that teachers must ensure that, by the end of the year, the assessments provide evidence that the range of different
skills have been assessed for each learner.

2.5.1.1	Acquire Knowledge

In the process of acquiring knowledge learners must:

•	     access information from a variety of sources (teachers, reference books, textbooks, internet, experts, peers,
       parents, etc.);

•	     select key ideas;

•	     recall facts; and

•	     describe concepts, processes, phenomena, mechanisms, principles, theories, laws and models in Life
       Sciences.

Assessment

In order to assess these competences (or cognitive skills), teachers should use the following verbs in the tasks or
assessments that they set: state, name, label, list, define, describe and any other verbs that indicate that learners’
knowledge of the subject is being assessed.




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LIFE SCIENCES GRADES 10-12
2.5.1.2	Understand and Make Connections Between Ideas and Concepts to Make Meaning of Life Sciences

In the process of making meaning and achieving understanding learners must:

•	    build a conceptual framework of science ideas;

•	    organise or reorganise knowledge to derive new meaning;

•	    write summaries;

•	    develop flow charts, diagrams and mind maps; and

•	    recognise patterns and trends.

Assessment

In order to assess these competencies (cognitive skills), teachers should use the following verbs in the tasks or
assessments they set: explain, compare, rearrange, give an example of, illustrate, calculate, interpret, suggest a
reason, make a generalisation, interpret information or data, predict, select, differentiate or any other suitable verbs
that indicate that learners’ understanding of the subject is being assessed.

2.5.1.3	Apply Knowledge on Life Sciences in New and Unfamiliar Contexts

Learners must be able to:

•	    use information in a new way; and

•	    apply knowledge to new and unfamiliar contexts.

Assessment

In order to assess these competencies (cognitive skills), teachers should use the following verbs in the tasks or
assessments that they set: demonstrate, interpret, predict, compare, differentiate, illustrate, solve and select as well
as any other appropriate verbs that assess a learner’s ability to apply knowledge. The key is that learners must be
able to apply knowledge in a context or situation for which they have not yet acquired specific knowledge, or use the
knowledge in a new way.

2.5.1.4	 Analyse, Evaluate and Synthesise Scientific Knowledge, Concepts and Ideas

In the process of learning science, learners must be able to:

•	    analyse information/data;

•	    recognise relationships between existing knowledge and new ideas;

•	    critically evaluate scientific information;

•	    identify assumptions; and

•	    categorise information.




      14          CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
LIFE SCIENCES GRADES 10-12
Assessment

In order to assess these competencies (cognitive skills), teachers should use the following verbs in the tasks or
assessments that they set: appraise, argue, judge, select, evaluate, defend (a point of view), compare, contrast,
criticise (an argument or assumption) differentiate, distinguish, discuss or any other suitable verbs that indicate that
analysis, evaluation and synthesis are being assessed.

2.5.2	 Specific Aim 2: Investigating Phenomena in Life Sciences

Learners must be able to plan and carry out investigations as well as solve problems that require some practical
ability. This ability is underpinned by an attitude of curiosity and an interest in wanting to find out how the natural world
and living things in it work.

The following range of skills relates to doing practical work in Life Sciences. All seven skills will not apply to every
activity equally. The skills are aligned to what learners would be doing in the normal course of carrying out an
investigation. Teachers must select those skills that apply to and can be assessed in the context of specific activities.
By the end of the Grade 10 year, all seven skills must have been assessed at a grade-appropriate level.

Note: While doing practical investigations involves a specific range of skills, learners’ knowledge on and understanding
of science can, and should, be assessed within the context of the cognitive domains of Specific Aim 1.

Learners must be able to:

2.5.2.1	Follow Instructions

 This is essential, especially in the lower grades and in large classes. Teachers cannot expect all learners to use
unfamiliar equipment and to do so independently without giving them a clear set of instructions to follow. The amount
of assistance required would indicate the level of performance in this regard. Adherence to safety rules should be
part of this.

2.5.2.2	 Handle Equipment or Apparatus

This should include having knowledge of the apparatus, that is, being able to name it and knowing what it is used
for. The learner should be able to use different kinds of equipment. ‘Handling equipment’ is a generic skill and
applies to any equipment used for many different kinds of investigations. Handling improvised equipment requires the
same skills as would be required for handling standard laboratory equipment. The emphasis is on using equipment
appropriately and safely (and not on only memorising the names of apparatus).

2.5.2.3	Make Observations

A variety of observations are possible and observations can be recorded in different ways, such as:

•	     drawings;

•	     descriptions;

•	     grouping of materials or examples based on observable similarities and/or differences;

•	     measurements;

•	     comparing materials before and after treatment;



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LIFE SCIENCES GRADES 10-12
•	     observing results of an experimental investigation which will involve recording information in an appropriate
       way; and

•	     counting.

2.5.2.4	Record Information or Data

This should include recording observations or information as drawings, descriptions, in simple table format, as simple
graphs, etc. The skill of ‘recording’ is transferable across a range of different scientific activities.

2.5.2.5	Measure

Learners should know what to measure, how to measure it and have a sense of the degree of accuracy that is
required. A variety of things could be measured including (but not limited to) length, volume, temperature, weight or
mass and numbers (counting). Measuring is a way of quantifying observations and in this process learners should
learn to make estimations.

2.5.2.6	Interpret

Learners should be able to convert information from one form, in which it was recorded, into another, for instance
converting a table into an appropriate graph.

Learners should be able to perform appropriate simple calculations, to analyse and extract information from tables
and graphs, apply knowledge of theory to practical situations, recognise patterns and/or trends, appreciate the
limitations of experimental procedures as well as make deductions based on evidence.

2.5.2.7	Design/Plan Investigations or Experiments

Not all investigations are based on the ‘classic’ dependent-independent variables and controls. For example, an
investigation could involve observing soil profiles or counting populations.

Designing an investigation is a different process to planning an investigation. In the design process options need to
be considered in terms of the hypothesis and variables may have to be identified.

Skills include:

•	     identifying a problem;

•	     hypothesising;

•	     selecting apparatus or equipment and/or materials;

•	     identifying variables;

•	     suggesting ways of controlling variables;

•	     planning an experiment;

•	     suggesting ways of recording results; and

•	     understanding the need for replication or verification.

In Grades 10, 11 and 12, learners must be able to plan and/or design a simple investigation or experiment.


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LIFE SCIENCES GRADES 10-12
Note: Skills 2.5.2.1-2.5.2.6 (following instructions, handling equipment, making observations, recording information,
measuring and interpreting information) are all required, in one form or another, to carry out an experiment or
investigation. By separating seven different kinds of skills (2.5.2.1-2.5.2.7), these skills can apply to the variety of
practical work that is appropriate for a particular grade in Life Sciences, including simple investigations or experiments.
This approach makes it easier to assess learners in a range of different circumstances and it enables a teacher to
judge a learner’s ability to do science. The skills are based on what learners will be doing actions during the normal
course of doing practical work. However, there are some circumstances in which only some of these skills would
apply and not every skill can be assessed in every practical task.

2.5.3	 Specific Aim 3: Appreciating and Understanding the History, Importance and Applications of Life
      Sciences in Society

The third aim of Life Sciences is to enable learners to understand that school science can be relevant to their lives
outside of the school and that it enriches their lives.

Learners must be exposed to the history of science and indigenous knowledge systems from other times and other
cultures. Scientific knowledge and understanding have been developed over time by people who were curious and
who persevered with their quest for knowledge. Our present understanding of science will change and improve as
modern scientists make new discoveries.

The skills that can be developed in the process of achieving Specific Aim 3 are cognitive rather than practical. These
are the same cognitive skills as the ones identified for Specific Aim1.

Since the knowledge that will be acquired in respect of Specific Aim 3 always relates to specific subject content, the
content provides the context for learning about various aspects of science in society. Science should therefore be
taught in an integrated way in order to both enhance the subject and to clarify the relationship between the subject
and society i.e. indigenous knowledge systems that relate to a specific topic, related history of scientific discoveries
and the applications of science in everyday life.

2.5.3.1	 Understanding the History and Relevance of Some Scientific Discoveries

The subject content provides the context for learning about the history of scientific discoveries and their relevance for
society. These aspects, the history and relevance, should be linked to and taught in conjunction with the topics and
content that are related to a particular discovery or a particular scientist.

2.5.3.2	The Relationship Between Indigenous knowledge and Life Sciences

All knowledge stems from views on how the world works. One of the differences between modern science (and
technology) and traditional, indigenous knowledge systems is that they have their origins in different world views.
Learners should understand the different cultural contexts in which indigenous knowledge systems were developed.

The examples of indigenous knowledge that are selected for study should, as far as possible, reflect different South
African cultural groups. They should also link directly to specific areas in the Life Sciences subject content.

2.5.3.3	The Value and Application of Life Sciences Knowledge in the Industry in Respect of Career
          Opportunities and in Everyday Life

Knowledge of Life Sciences is applied in and relevant to various aspects of society. Examples should be relevant to
the subject content that learners are dealing with at a particular time. There are career opportunities in the field of
socio-biology and animal behaviour, plant pathology, game management, environmental impact studies, preservation



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LIFE SCIENCES GRADES 10-12
of biodiversity, palaeontology, palaeoanthropology, agriculture, horticulture, environmental law, science journalism,
biotechnology, genetic engineering, and many others. Moreover, although learners should be made aware of career
choices, it is not necessary to discuss or teach these in great detail.

Skills

Whilst the kind of knowledge is different for Specific Aims 1 and 3, the content should be taught in an integrated way
in order for learners to understand the history, relevance and applications of science more easily. Importantly, the
skills that must be developed and assessed for Specific Aim 3 are the same as those of Specific Aim 1 (under 2.5).

Learners must be able to:

•	       access information;

•	       select key ideas;
                                                            Specific Aim 1.1
•	       recall information;

•	       describe knowledge of natural sciences;

•	       build a conceptual framework;

•	       organise or reorganise knowledge;

•	       write summaries;				Specific Aim 1.2

•	       develop flow charts and mind maps;

•	       recognise patterns and trends;

•	       apply knowledge in new contexts;

•	       use knowledge in a new way;				 Aim 1.3
                                       Specific

•	       analyse information/data;

•	       critically evaluate scientific information;

•	       recognise relationships between existing;

	        knowledge and new ideas; 				 Aim 1.4
                                     Specific


•	       identify assumptions; and

•	       categorise information.

The three aims are aligned with the three learning outcomes with which teachers are familiar. Within each of these
aims, specific skills or competences have been identified. It is not advisable to try to assess each of the skills
separately, nor is it possible to report on individual skills separately. However, well designed assessments must
show evidence that, by the end of the year, all of the skills have been assessed at a grade-appropriate level.
There must be a clear link between the aims and the outcomes of learning. The processes of teaching, learning and
assessment will provide the links between the specific aims and the achievement of the outcomes.



         18          CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
LIFE SCIENCES GRADES 10-12
2.5.4	Developing Language Skills: Reading and Writing

Teachers of Life Sciences should be aware that they are also engaged in teaching language across the curriculum.
This is particularly important for learners for whom the Language of Learning and Teaching (LoLT) is not their home
language. It is important to provide learners with opportunities to develop and improve their language skills in the
context of learning Life Sciences. It will therefore be critical to afford learners opportunities to read scientific texts and
to write reports, paragraphs and short essays as part of the assessment, especially in (but not limited to) the informal
assessments for learning.


2.6	Time

The time allocation for Life Sciences is 4 hours per week in Grades 10 to 12.

The curriculum for Grade 10 has been designed to be completed within 32 weeks out of 40 weeks in the school year.
This leaves 8 weeks in the year for examinations, tests and disruptions due to other school activities.

The curriculum for Grade 11 has been designed to be completed within 32 weeks out of 40 weeks in the school year.
This leaves 8 weeks in the year for examinations, tests and disruptions due to other school activities.

The curriculum for Grade 12 has been designed to be completed within 27½ weeks out of 40 weeks in the school
year. This leaves 12½ weeks in the year for examinations, tests and disruptions due to other school activities.

In Grades 10, 11 and 12 the time allocated for the teaching of the content includes the practical tasks and
investigations. These are an integral part of the teaching and learning process.


2.7	Resources

The resources needed for teaching Life Sciences are listed next to each topic in order to assist teachers with planning
and preparation.

Every learner must have his or her own textbook. Teachers should ensure that a system is in place for recovering
textbooks at the end of every year. Schools must provide secure storage space where textbooks and other equipment
can be stored safely.

Ideally, every learner should have access to sufficient workspace and equipment to carry out investigations. For safety
reasons, no more than three learners may share space and equipment in instances where space and equipment are
limited due to large classes. With regard to equipment, schools must make every effort to ensure that the essential
equipment is provided.

While it is acknowledged that it is not ideal to use improvised equipment, teachers should remember that it is more
important for learners to have the experience of carrying out a variety of investigations than to depend on the
availability of standard laboratory equipment. If equipment is limited, teachers should be encouraged to improvise.
The same skills can be developed using improvised equipment. Moreover, if there are no alternatives, it is more
effective for teachers to demonstrate an investigation than to not do investigations at all due to a lack of equipment.
Secure storage for equipment and chemicals must be provided by the school.

Teachers should ensure that learners are familiar with rules regarding the safe use of equipment and chemicals. The
Life Sciences classroom or laboratory should be equipped with charts, Bunsen burners or spirit lamps, hand lenses,
bioviewers and relevant biostrips, microscopes, a set of prepared slides, glass slides and cover slips, reference



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LIFE SCIENCES GRADES 10-12
books, blades or scalpels, models, field guides, identification keys, thermometers, glass beakers, test tubes and
chemicals, and, if at all possible, access to appropriate DVDs and a DVD player.

Fresh plant material can be obtained from the surroundings and teachers should ensure that appropriate plants (e.g.,
Impatiens) are planted on the school grounds. Fresh animal material can very often be obtained at reasonable prices
from local butchers.

Teachers must be qualified to teach the subject and must familiarise themselves with the equipment and how it is
used.




        20       CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
LIFE SCIENCES GRADES 10-12
SECTION 3

3.1 	LIFE SCIENCES FOR GRADE 10: CONTENT

The first part of the curriculum in Grade 10, called ‘Subject Orientation’, is included to prepare learners for Life
Sciences in the FET band. Its purpose is to:

•	    familiarise learners with the way in which the teacher will organise learning activities;

•	    familiarise learners with the behaviour that will be required and rules of safety;

•	    connect what learners have learnt in the Senior Phase with what they will learn and the range of skills that they
      must develop in FET;

•	    describe how knowledge is constructed in Life Sciences and to confirm a scientific approach that both teachers
      and learners will be required to use when teaching and learning Life Sciences; and

•	    introduce learners to some basic principles related to Life Sciences




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GRADE 10

                                                                                                                                       TERM 1




22
                                                    Time                                                                   Orientation to Life Sciences: Subject Orientation
                                                    ½ week      Establish links between Natural Sciences (GET) and Life Sciences (FET). Define life, its scope, and its continuity. Life on Earth is dynamic, with homeostasis maintaining
                                                    (2 hours)   balance at every level of organisation. Life is characterised by changes over billions of years. Living systems exhibit levels of organisation from molecules to biomes.
                                                                The nature of science: science involves contested knowledge, and non-dogmatic inferences based on evidence and peer review.
                                                                How Science Works: Science is based on:
                                                                •	 fundamental knowledge built on scientific evidence and verified findings (articles that are published in journals or at conferences: peer review);
                                                                •	 observing;
                                                                •	 investigating;
                                                                •	 making measurements and understanding the importance of scaling;
                                                                •	 collecting and presenting data in the form of drawings, written descriptions, tables and graphs;
                                                                                                                                                                                                                                             LIFE SCIENCES GRADES 10-12




                                                                •	 understanding the limitations of scientific evidence;
                                                                •	 identifying patterns and relationships in data;
                                                                •	 communicating findings; and
                                                                •	 taking societal aspects of scientific evidence into account.
                                                                Scientific skills involve:
                                                                •	 importance of biological principles such as relationship between surface area and volume/size, the relationship between structure and function
                                                                •	 biological drawings: principles that apply
                                                                •	 translating 3 dimensional objects or specimens into 2 dimensional drawings and photographs and interpreting 2 dimensional drawings and photographs: transverse
                                                                   and longitudinal sections
                                                                •	 general introduction to the range of skills listed under the Specific Aims that must be developed
                                                                •	 introduction to graphs: different kinds of graphs and when to use them; interpreting graphs.
                                                                •	 calculating




CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
                                                                Organisation of learning and rules include:
                                                                •	 using equipment and other resources;
                                                                •	 understanding procedures and how to safely use apparatus in laboratories and classrooms;
                                                                •	 working in groups;
                                                                •	 understanding assessment requirements; and
                                                                •	 a very brief mention of careers and subject combinations for entrance to higher education.
                                                                Note: This introduction is not assessable. However, the relevant aspects must be incorporated into in the context of the specific content where they apply, and will then
                                                                be assessed.
TERM 1
       Strand 1: Life at the Molecular, Cellular and Tissue Level
       All living organisms are made of atoms which combine to form molecules. In turn, these molecules make up the basic units of life i.e. cells. Plant and animal cells have a complex




CAPS
       organisation which enables them to carry out the basic processes of life, i.e. movement (movement in and around the cells and some cells move), nutrition (cells produce food or obtain
       food from elsewhere), respiration, excretion, growth, reproduction and responding to stimuli. Cells are specialised and form tissues which perform particular functions. The tissues are
       arranged into organs which are also specialised to carry out particular functions. This strand introduces learners to life at the molecular, cellular, tissue and organ level (links to Grade 9).
       Time                Topic                                    Content                                                     Investigations                                    Resources
       2½ weeks      The Chemistry        Molecules For Life                                              Optional:                                                      •	 Textbooks
       (10 hours)    of Life              Organic molecules are made up of C, H, and O, and               •	 Construct models of simple and more complex                 •	 Charts
                                          some contain other elements, such as N and P. Cells are            molecules using beads or plasticine.                        •	 Equipment
                                          made up of proteins, carbohydrates, lipids, nucleic acids
                                                                                                                                                                         •	 Test tubes
                                          and vitamins.
                                          (Only basic structural detail required.)
                                          Inorganic Compounds
                                          •	 The main functions of:
                                              - 	 water: 2 H and 1 O;
                                              - 	 minerals: e.g., Na, K, Ca, P, Fe, I, nitrates,          •	 Analyse nutritional content indicated on food               •	 A selection of
                                                  phosphates; macro and micro elements; main                 packaging: vitamins, minerals and other nutritional         	   food packaging showing
                                                  functions and deficiency diseases (link to nutrition       content.                                                        nutritional content
                                                  and Grade 9).
                                          •	 The need for fertilisers in over utilised soils, e.g.,
                                             where crops are grown and regularly harvested,
                                             fertilizers are washed away into rivers, and
                                             eutrophication can take place (link to ecology).




23
                                                                                                                                                                                                           LIFE SCIENCES GRADES 10-12
TERM 1
                                                    Organic Compounds                                               Essential:                                                    •	 Chemicals




24
                                                    •	 carbohydrates - monosaccharaides (single sugars),            •	 Food tests for starch, glucose, lipids and proteins.       •	 Bunsen burners
                                                       e.g., glucose and fructose; disaccharides, (double           •	 Investigate the working of a ‘biological’ washing          •	 Thermometers
                                                       sugars), e.g., sucrose and maltose; polysaccharides             powder (containing enzymes).                               •	 Washing powder
                                                       (many sugars), e.g., starch, cellulose and glycogen;
                                                    •	 lipids (fats and oils) - 1 glycerol and 3 fatty acids:
                                                                                                                    OR
                                                       unsaturated and saturated fats; cholesterol in foods;
                                                       and heart disease (link to Grade 9);
                                                                                                                    •	 Hydrogen Peroxide and chicken liver to demonstrate         •	 H2O2 and chicken liver
                                                    •	 proteins - amino acids (C,H, O and N and some
                                                                                                                       the effect of enzymes.                                     or
                                                       have P, S, Fe) - are sensitive to temperature and pH:
                                                       loss of structure and function; the role of enzymes in
                                                       breaking down/synthesising molecules; the influence          OR
                                                       of temperature and pH on enzyme action; the Lock
                                                                                                                                                                                                                  LIFE SCIENCES GRADES 10-12




                                                       and Key Model of how enzymes work; enzymes in
                                                                                                                    •	 Fresh pineapple juice and solid egg white in a plastic     •	 Pineapple juice, egg
                                                       everyday life (for instance using washing powders);
                                                                                                                       drinking straw.                                               white and plastic drinking
                                                    •	 Mention of nucleic acids - DNA and RNA - consisting                                                                           straws
                                                                                                                    AND
                                                       of C, H, O, N and P
                                                    (no details of structure required); and
                                                    •	 vitamins - e.g., A, one of the B vitamins, C, D and E.
                                                                                                                    •	 Observe, measure and record results of the
                                                    (Simple diagrams to represent molecules. Review briefly
                                                                                                                       experiment done at different temperatures.
                                                    why these substances are needed in plants and animals
                                                    i.e. build on prior knowledge. Do not give detail of
                                                    structure or function - functions will be dealt with in later   •	 Compare the Recommended Daily Allowance (RDA)
                                                    sections where appropriate. This is a brief introduction to        with usual diet of individual learners. Draw a pie chart
                                                    the molecular make-up of organisms.)                               of the food types and discuss implications of the




CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
                                                                                                                       usual diet of learners.
TERM 1
       3 weeks      Cells: The       Molecular Make-Up                                                                                                         •	 Textbooks
       (12 hours)   Basic Units of   Cells are mostly made up of proteins, carbohydrates,                                                                      •	 Charts




CAPS
                    Life             lipids, nucleic acids and water.                                                                                          •	 Micrographs
                                                                                                                                                               •	 Microscope slides
                                     Brief overview of the history of microscopy: from lens        •	   Explain and demonstrate how a light microscope         •	 Chemicals
                                     and light microscopes and to electron microscopes. How             works.                                                 •	 Electron micrographs (in
                                     these instruments enabled people to see cells and then             Use a light microscope to observe and record (draw)       text books)
                                     structures within cells which led to cell theory.                  the structure of a:                                    •	 Transparent rulers
                                     (Briefly revise Grade 9 work on the cell.)                         -	 plant cell (wet mount of onion epidermis) and an    •	 Light microscopes
                                     Cell Structure and Function: The Roles of Organelles               -	 animal cell (cheek cells)                           •	 Bioviewers and biostrips
                                     •	 cell wall - support structure in plant cells only;              If microscopes are not available, use micrographs.
                                     •	 cell membrane - fluid mosaic model, boundaries and              -	 Calculate magnification of drawing by measuring
                                        transport: movement across membranes: diffusion,                   the field of view under a microscope.
                                        osmosis and active transport;
                                                                                                   OR
                                     •	 nucleus, chromatin material, nuclear membrane,
                                        nucleopores, nucleolus: the control centre, heredity;      •	   Calculate the size of specimen on a micrograph using
                                                                                                        the scale line provided.
                                     •	 cytoplasm - storage and circulation of materials;
                                     •	 mitochondria - release energy during cell respiration;
                                     •	 ribosomes - protein synthesis;
                                     •	 endoplasmic reticulum (rough and smooth) - transport
                                        systems;
                                     •	 Golgi body - assembles secretions;
                                     •	 plastids - production and storage of food and
                                        pigments; and
                                     •	 vacuole, lysosomes, vesicles - storage, digestion and      •	   Investigate diffusion.                                 •	 Beakers
                                        osmoregulation.
                                                                                                   •	   Investigate osmosis.                                   •	 Salt,
                                     Relate structure and location of organelles to their
                                                                                                                                                               •	 Potatoes or eggs
                                     functions.
                                     (This is an introduction; some organelle functions will be
                                     explored in more detail in other sections.)
                                     Cells differ in size, shape and structure in order to carry
                                     out specialised functions [link to tissues].




25
                                     The differences between plant and animal cells (link to
                                     Grade 9).
                                                                                                                                                                                             LIFE SCIENCES GRADES 10-12
TERM 1
                                                    2 weeks      Cell Division:   The Cell Cycle including Mitosis:                                •	   Use suitable resources to examine cell division, e.g.,   •	 Textbooks




26
                                                    (8 hours)    Mitosis          Interphase, mitosis (with names of phases), cytokinesis               microscope slides, micrographs, posters and models.      •	 Charts
                                                                                  and growth.                                                           Record observations as drawings.                         •	 Micrographs/micro-scope
                                                                                  The Continuous Process of Mitosis: The division of a cell                                                                         slides
                                                                                  to form two identical cells.                                                                                                   •	 Microscopes
                                                                                  (Simple description with diagrams to show chromosome                                                                           •	 Reference books
                                                                                  changes so that one parent cell forms two identical
                                                                                  daughter cells.)
                                                                                  •	 The difference in telophase between plant and animal
                                                                                     cells.
                                                                                  Chromosomes: are found in nuclei of all cells; two
                                                                                  chromatids and centromere.
                                                                                                                                                                                                                                              LIFE SCIENCES GRADES 10-12




                                                                                  Role of Mitosis: growth and repair; Reproduction in
                                                                                  some simple organisms.
                                                                                  Cancer: Uncontrolled cell division and growth                    •	   Research and present information on ONE of the
                                                                                  •	 causes of cancer;                                                  cancers. This must include causes, prevalence and
                                                                                                                                                        treatment. Information can be presented verbally or
                                                                                  •	 beliefs and attitudes concerning cancer (discuss
                                                                                                                                                        as a written report.
                                                                                     briefly);
                                                                                  •	 treatments of cancer; and
                                                                                  •	 medical biotechnology, e.g., radiotherapy and
                                                                                     chemotherapy (no detail required).
                                                    1 week       Plant and        Introduction to tissues                                                                                                        •	 Textbooks
                                                    (4 hours)    Animal Tissues   Introduce the concept of a tissue as a group of similar                                                                        •	 Charts




CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
                                                                                  cells adapted for a particular function; cell differentiation.                                                                 •	 Microscope slides
                                                                                  Emphasise the relationship between their basic structure                                                                       •	 Micrographs
                                                                                  and function.
                                                                                                                                                                                                                 •	 Microscopes
                                                                                  Plant Tissues                                                    •	 Examine and identify some plant tissues using
                                                    Total
                                                                                  Xylem, phloem, parenchyma, collenchyma,                             microscope, biostrips, micrographs or posters. Draw
                                                    9 weeks
                                                                                  sclerenchyma, epidermis and meristematic tissues.                   cells that make up these tissues to show specialised
                                                    (36 hours)                                                                                        structure.
TERM 1
       Assessment   •	 One formal, recorded class test.                           •	 One practical task.
                    •	 Assessment for learning (informal) using a variety         •	 Refer to the range of skills specified under Specific




CAPS
                       of strategies and appropriate forms of assessment             Aim 2.
                       in tests, homework exercises, worksheets, reports,
                       summaries, essays, etc.
                    Refer to the range of skills listed under Specific Aims
                    1 and 3. Note that knowledge and understanding
                    of investigations and practical work should also be
                    assessed in written worksheets, reports, homework
                    exercises and tests. The cognitive skills listed under
                    Specific Aims 1 and 3 will also apply to knowledge and
                    understanding of investigations.




27
                                                                                                                                             LIFE SCIENCES GRADES 10-12
TERM 2
                                                                                                          Strand 1: Life at Molecular, Cellular and Tissue Level (continued)




28
                                                    Time             Topic                                 Content                                                     Investigations                                 Resources
                                                    2 weeks (8   Plant and        Animal Tissues                                                  •	 Examine and identify some animal tissues using           •	 Textbook
                                                    hours)       Animal Tissues   The Four basic types with some examples:                           microscope, biostrips, micrographs or posters.           •	 Charts
                                                                 (continued)                                                                         Draw the cells that make up these tissues to show
                                                                                  •	 epithelial;                                                                                                              •	 Microscope slides/
                                                                                                                                                     specialised structure.
                                                                                  •	 connective;                                                                                                                 micrographs

                                                                                  •	 muscle; and                                                                                                              •	 Microscopes

                                                                                  •	 nerve tissues                                                                                                            •	 Reference books

                                                                                  The relationship between structure and function.
                                                                                  (No detail required - some tissues, e.g., blood and nerves
                                                                                  in the reflex arc, will be covered in more detail in relevant
                                                                                                                                                                                                                                          LIFE SCIENCES GRADES 10-12




                                                                                  sections.)
                                                                                  Applications of Indigenous Knowledge Systems and                •	 Collect information on ONE field of biotechnology
                                                                                  Biotechnology                                                      related to plant or animal tissues e.g., cloning, stem
                                                                                                                                                     cell research or in vitro fertilisation.
                                                                                  •	 traditional technology, e.g., traditional medicines and
                                                                                     healers;
                                                                                  •	 medical biotechnology, e.g., immunity, vaccines,
                                                                                     antibiotics and blood transfusions; and
                                                                                  •	 the cloning of plant and animal tissues and stem cell
                                                                                     research (ethics and legislation).
                                                    ½ week       Organs           Organs consist of a number of tissues. Leaf structure will      •	 Observe and draw a section of a dicotyledonous leaf.     •	 Textbooks
                                                    (2 hours)                     be used as an example of an organ. Other organs will be                                                                     •	 Charts
                                                                                  dealt with in their relevant sections in life processes.




CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
                                                                                                                                                                                                              •	 Micrographs/bioviewers
                                                                                  Leaf Structure
                                                                                                                                                  Options:                                                    •	 Microscopes
                                                                                  A cross-section of a dicotyledonous leaf to demonstrate
                                                                                                                                                  •	 Observe prepared slides of a cross section of a leaf.    •	 Micrographs/bioviewers
                                                                                  and explain its structure in terms of its functions, i.e.
                                                                                                                                                  OR
                                                                                  photosynthesis, gas exchange and transport. Link this
                                                                                  with plant tissues, appropriate cell organelles, movement       •	 Observe micrographs.
                                                                                  across membranes and movement of molecules into,                OR
                                                                                  through and out of the leaf.                                    •	 Observe bioviewer slide strips
TERM 2
       Strand 2: Life Processes in Plants and Animals
       Learners explore the anatomy of plants and animals in respect of support and transport systems. In animals, the different support systems are compared, with a focus on the human




CAPS
       support system and locomotion.
       3 weeks      Support and        Anatomy of Dicotyledonous Plants (link to Grade 7)              •	 Use a microscope or micrographs to observe and              •	 Textbook
       (12 hours)   Transport          •	 Root and stem: the distribution of different tissues;           draw cross sections of root and stem (plan only).           •	 Microscopes
                    Systems in                                                                         •	 If microscopes are available make mounts of, and
                                       •	 the structure of cells in different tissues (link to plant                                                                  •	 Prepared slides
                    Plants                                                                                draw, whole xylem vessels from celery or pumpkin
                                          tissues)                                                                                                                    •	 Glass slides
                                                                                                          stalks to see secondary thickening patterns.
                                                                                                                                                                      •	 Cover slips
                                                                                                                                                                      •	 Pumpkin or celery stems
                                                                                                                                                                      •	 Blades or scalpels
                                       •	 Secondary growth (link to cell division); the annual         •	 Observe annual rings in a cut tree to assess age and        •	 Coloured ink/food
                                          rings in a tree trunk to assess age and to infer climate        climatic conditions .                                          colouring
                                          change.




                                       Transpiration                                                   •	 Design an investigation to discover the effect of           •	 Potometer
                                       The relationship between water loss and leaf structure             temperature, light intensity or humidity on transpiration   •	 Beakers
                                       (link to Term 1).                                                  rate (using a simple potometer). Identify variables and
                                                                                                                                                                      •	 Leafy twigs
                                                                                                          control variables.
                                       Factors that affect the rate of transpiration are:
                                       •	 temperature;
                                                                                                       •	 Investigate water uptake through the roots
                                       •	 light intensity;
                                       •	 wind;
                                       •	 humidity.

                                                                                                                                                                      •	 Soft plant e.g., Busy
                                                                                                       •	 Investigate water movement through xylem (use
                                       •	 Wilting and Guttation                                                                                                          Lizzie/Impatiens
                                                                                                          Impatiens if possible).
                                       •	 the intake of water and minerals into the xylem in                                                                          •	 Eosin
                                          roots;                                                                                                                      •	 Glass containers
                                           -	 the transport of water and minerals to leaves;
                                           -	 The translocation of manufactured food from




29
                                              leaves to other parts of plant
                                                                                                                                                                                                   LIFE SCIENCES GRADES 10-12
TERM 2
                                                    3 weeks      Support      Skeletons                                                    •	 Observe the human skeleton (model or photographs).    •	 Textbooks




30
                                                    (12 hours)   Systems in   •	 Examples of animals with:                                                                                          •	 Models
                                                                 Animals
                                                                                 -	 a hydrostatic skeleton,                                                                                         •	 Photographs
                                                                                 -	 an endoskeleton and
                                                                                 -	 an exoskeleton
                                                                              Advantages and disadvantages of each.


                                                                              •	 Emphasise developmental progression and relate it to
                                                                                 the need for support linked to a terrestrial lifestyle.


                                                                              Human Skeleton
                                                                                                                                                                                                                                   LIFE SCIENCES GRADES 10-12




                                                                              •	 the axial skeleton: mention of facial bones, cranium,
                                                                                 foramen magnum, palate and jaws (to link with human
                                                                                 evolution in Grade 12); and
                                                                              •	 the appendicular skeleton.


                                                                              Functions of the Skeleton
                                                                              •	 Movement
                                                                              •	 Protection
                                                                              •	 Support
                                                                              •	 Storage of minerals
                                                                              •	 Hearing




CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
                                                                              •	 Structure of a long bone;                                 •	 Observe and draw a typical longbone: longitudinal     •	 Selection of cut long
                                                                              •	 the relationship between the structure and function of       section                                                  bones (from butchery)
                                                                                 the following tissues:
                                                                                 -	bone;                                                   •	 Observe as many of these tissues as possible: fresh   •	 Obtain material from a
                                                                                 -	cartilage;                                                 material from a butcher                                  butcher: Joint with bone,
                                                                                                                                                                                                       cartilage ligaments
                                                                                 -	 tendons;
                                                                                                                                                                                                    OR
                                                                                 -	ligaments.
TERM 2
                    Joints                                                       •	 Observe and describe the movement which occurs at        •	 Microscope prepared
                    •	 Fixed joints                                                 each of these types of joints. If possible, observe an      slides




CAPS
                                                                                    X-ray of ball and socket and hinge joints                OR
                    •	 Partly movable joints
                    •	 Freely movable (synovial) joints. Structure of synovial                                                               •	 Micrographs
                       joints: ball and socket, hinge, pivot and gliding.
                    The roles of the following in human locomotion:                                                                          •	 X-rays if possible
                    •	 bones;
                    •	 joints;
                    •	 ligaments;
                    •	 tendons;
                    •	 antagonistic muscles (e.g., biceps/triceps).
                    •	 The Structure of voluntary skeletal muscles: Myofibrils
       Total           and muscle contraction.
       8½ weeks     •	 Diseases that affect the skeleton: Rickets in children,
       (34 hours)      osteoporosis, arthritis, etc.
       Assessment   •	 One formal, recorded class test.                          One practical task.
                    •	 Mid-year examination (2½ hrs).
                    Refer to the range of skills specified in Specific Aims 1    Refer to the range of skills specified in Specific Aim 2.
                    and 3. Assessment for learning (informal) using a variety
                    of strategies and appropriate forms of assessment
                    in homework exercises, written worksheets, reports,
                    summaries, essays, tests, etc.
                    Note that knowledge and understanding of investigations
                    and practical work should also be assessed in written
                    worksheets, homework exercises, reports, tests, essays
                    and examinations. The cognitive skills listed under
                    Specific Aims 1 and 3 will also apply to knowledge and
                    understanding of investigations.




31
                                                                                                                                                                      LIFE SCIENCES GRADES 10-12
TERM 3
                                                    Strand 2: Life Processes in Plants and Animals (Continued))




32
                                                    Learners study the transport systems of the human body.
                                                    Time               Topic                                  Content                                                 Investigations                                  Resources
                                                    3 weeks      Transport          Circulatory System                                                                                                        •	 Textbooks
                                                    (12 hours)   Systems in         •	 The blood circulation system: pulmonary and systemic                                                                   •	 Charts
                                                                 Mammals               (double, closed) circulatory systems, including the:
                                                                 (Human)                                                                          •	 Dissection of mammal heart (sheep, cow or pig)
                                                                                        -	 heart and associated blood vessels;                                                                                •	 Sheep, cow or pig heart
                                                                                                                                                     obtained from a butchery. Identify chambers, valves,        obtained from a butchery.
                                                                                        -	 heart internal and external structure related to
                                                                                                                                                     muscle, and blood vessels.                               •	 Scalpels or blades
                                                                                           functioning; and
                                                                                        -	 cardiac cycle (the flow of blood through the heart)
                                                                                    •	 The direction of blood flow: the difference between        •	 In pairs, measure the pulse of one learner before and    •	 Stop watch or cell phone
                                                                                                                                                                                                                                             LIFE SCIENCES GRADES 10-12




                                                                                       oxygenated and deoxygenated blood in different parts          after exercise. Record, interpret and explain the data      clocks
                                                                                       of the system (diagram or schematic drawing):                 presented as a graph.
                                                                                        -	 lungs and pulmonary system and associated
                                                                                           blood vessels;
                                                                                        -	   major organs and systemic system; the associated
                                                                                             major blood vessels of the brain, small intestine,
                                                                                             liver and kidneys.
                                                                                    •	 The mechanisms for controlling the cardiac cycle and
                                                                                       heart rate (pulse).
                                                                                    •	 The blood vessels, including the structure and             •	 Observe and draw prepared microscope slides or           •	 Microscopes
                                                                                       functioning of arteries, veins with valves and                micrographs of blood cells and blood vessels as seen
                                                                                       capillaries.                                                  in cross section.
                                                                                                                                                                                                              •	 Prepared slides or




CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
                                                                                    •	 Lymph: the relationship between the blood system           •	 Draw a table of the differences between different           micrographs
                                                                                       and lymphatic system. Functions of lymphatic system.          types of blood vessels.
                                                                                    •	 Diseases of the heart and circulatory system, e.g.,
                                                                                       high and low blood pressure, heart attacks and
                                                                                       strokes, the treatments of heart diseases, e.g., stents,
                                                                                       valve replacements, bypass surgery, pacemakers,
                                                                                       and heart transplants (mention only).
TERM 3
       Strand 3: Environmental Studies
       Organisms interact with other organisms and with the environments in which they live in order to survive and produce offspring. The study of these interactions is called ecology. This




CAPS
       section is structured to expose learners to some of the interactions that occur in nature and to the terminology and concepts that describe them. For the Grade 11 curriculum, the
       terminology and concepts selected here will be used across all strands, where appropriate. This will enable learners to contextualise the meaning of these terms and concepts within the
       familiar contexts of their local area as well as Southern Africa as a whole. The local area context is also used to introduce how humans influence the environments in which they and other
       organisms live. The effect man has had on the environment - both locally and globally - will be examined in more detail in Grade 11. This section also builds on the knowledge that has
       been acquired during the Senior Phase.
       Time                Topic                                  Content                                                  Investigations                                    Resources
       6 weeks       Biosphere to        Biosphere                                                                                                                   •	 Textbooks
       (24 hours)    Ecosystems          •	 The concept of the biosphere.
                                         •	 The inter-connectedness with and components of the
                                            global ecosystem: the hydrosphere, lithosphere and
                                            atmosphere (Links to Grade 8).
                                         Biomes
                                         •	 Terrestrial and aquatic biomes of southern Africa
                                            and how climate, soils and vegetation influence the
                                            organisms found in each.
                                         •	 The location of the different biomes in South Africa.
                                         Environment
                                         The concept of environment in terms of human activities
                                         in and interactions with the natural environment. Abiotic
                                         and biotic factors: effects on the community.
                                         Ecosystems                                                   Fieldwork                                                      •	 Identification guides
                                         The concept of ecosystem, structure and ecosystem            Choose ONE ecosystem (close to the school) within a               and keys to groups of
                                         functioning:                                                 local biome for special study. The study must:                    organisms
                                         •	 Abiotic factors:                                                                                                         •	 Access to an ecosystem
                                             -	 physiographic factors (aspect, slope, and altitude)   •	 deal with abiotic and biotic factors and the interactions   •	 Map of South Africa
                                             -	 soil (pH, humus content, texture, water retention        between them;                                               •	 DVDs
                                                capacity and air content)                             •	 the trophic relationships in an ecosystem;                  •	 The internet
                                             -	 light (day length and seasonal changes)               •	 record and describe seasonal changes over two terms         •	 Nature programmes on
                                             -	 temperature (effect of day/night and seasons)            either Terms 1 and 2 or Terms 3 and 4                          TV
                                             -	 water (water cycle and the importance of              •	 biodiversity within the ecosystem using field guides        •	 Local information




33
                                                wetlands)                                                and keys                                                    •	 Appropriate instruments
                                                                                                      •	 positive and/or negative human impact on the                   for measuring abiotic
                                                                                                                                                                                                     LIFE SCIENCES GRADES 10-12




                                                                                                         ecosystem                                                      factors.
TERM 3
                                                                    -	 atmospheric gases (link to pollution-Grade 12);         Different groups should investigate different factors.




34
                                                                       and                                                     Each group must plan, collect, record and present,
                                                                    -	 wind (link to transpiration).                           analyse and evaluate data.
                                                                    -	 Biotic factors, which include: (Links to Grade 8)       (This serves as an introduction/link to human influences
                                                                    -	producers                                                on the environment in Grade 11.)

                                                                    -	consumers
                                                                    -	decomposers.
                                                                 •	 Energy flow through ecosystems and relationship to
                                                                    trophic structure (food pyramids):
                                                                    -	 Trophic levels: producers, consumers (herbivores
                                                                       and carnivores and omnivores , decomposers (link
                                                                       with Grade 9 and nutrition in Grade 11);
                                                                                                                                                                                              LIFE SCIENCES GRADES 10-12




                                                                    -	 Flow charts of the following: nutrients water,
                                                                       oxygen, carbon and nitrogen cycles
                                                                    (Names, e.g., nitrates are required but no detail of
                                                                       chemistry is necessary)
                                                                 •	 Ecotourism:

                                                    Total: 9        -	economics
                                                    weeks           -	ethics
                                                    (36 hours)      -	opportunities
                                                    Assessment   •	 One formal, recorded class test.                           One practical task
                                                                 •	 Assessment for learning (informal) using a variety of
                                                                    strategies and appropriate forms of assessment in          Refer to the range of skills specified under Specific Aim 2.




CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
                                                                    written worksheets, homework exercises, summaries,
                                                                    reports, essays, etc. Refer to range of skills specified
                                                                    in Specific Aims1 and 3.
                                                                 Note that knowledge and understanding of investigations
                                                                 and practical work should also be assessed in written
                                                                 worksheets, reports, homework exercises and tests.
                                                                 The cognitive skills listed under Specific Aims 1 and 3
                                                                 will also apply to the knowledge and understanding of
                                                                 investigations.
TERM 4
       Strand 4: Diversity, Change and Continuity
       Life exists in a huge array of forms and modes of life which scientists organise according to man-made classification systems. Modern life forms have a long history, extending from the




CAPS
       first bacteria, around 3,5 billion years ago. South Africa has a rich fossil record of some key events in the history of life. Changes in life forms are related to climate changes as well as
       movements of continents and oceans over long periods of time.

       Time                Topic                                   Content                                                     Investigations                                   Resources
       1 week        Biodiversity         Biodiversity                                                                                                                •	 Textbooks
       (4 hours)     and                  Enormous biodiversity on Earth (large variety of species,                                                                   •	 Photographs
                     Classification       different ecosystems and genetic differences) with an                                                                       •	 Micrographs
                                          emphasis on the extent of biodiversity and endemism in
                                          southern Africa: indigenous and endemic species.

                                                                                                          •	 Principles of classification by grouping everyday
                                          •	 Classification Schemes
                                                                                                             objects on the basis of shared similarities into a
                                          Classification schemes are a way of organising                     simple nested hierarchy.                                 •	 A selection of everyday
                                          biodiversity                                                                                                                   objects
                                          •	 Brief history of classification: Scientists attempt to                                                                   •	 Identification guides
                                             classify organisms based on shared features. As                                                                          •	 Keys to groups of
                                             information increases classification changes.                                                                               organisms
                                          	   One of the currently accepted classification systems
                                              is the five-kingdom system: Animalia, Plantae, Fungi,
                                              Protista and Monera (Bacteria).
                                          •	 The naming of things in science: species concept
                                             and binomial system. Focus on Linnaeus (Carl von
                                             Linne) and his role in classification systems: Why do
                                             we use Latin?
                                          •	 Differences between prokaryotes and eukaryotes
                                             (link to cell structure).
                                          •	 The main groupings of living organisms, diagnostic           •	 Classify a selection of familiar organisms into          •	 Identification guides
                                             features of each:                                               groups based on visible evidence. Use keys and           •	 Keys
                                              -	Bacteria                                                     identification guides.
                                                                                                                                                                      •	 Photographs
                                              -	Protista




35
                                              -	Fungi
                                              -	Plants
                                                                                                                                                                                                        LIFE SCIENCES GRADES 10-12




                                              -	Animals
TERM 4
                                                    5 weeks      History of Life   Life’s History:Change throughtout the history of life         •	 Construct a timeline showing the history of life on




36
                                                    (20 hours)   on Earth          on Earth                                                         Earth. The timeline should show key events from the
                                                                                   •	 Changes in the composition of the atmosphere (eg.             emergence of the earliest life forms to the present
                                                                                      increases in the levels of oxygen)                            day to emphasise the long history of life.

                                                                                   •	 changes in climate (eg. ice ages)                          •	 Research ‘missing link’ between dinosaurs and birds
                                                                                                                                                    eg. Archaeopteryx
                                                                                   •	 geological events (eg. movements of continents)
                                                                                      and their effect on the distribution of living organisms   Coelacanth as an example of a living fossil found off
                                                                                      (biogeography)                                             the coast of South Africa

                                                                                   Evidence for changing sea level and rise and fall of          Present a verbal or written report.
                                                                                      the land (eg. bivalves and ammonites found on the
                                                                                      Makhatini Flats in Northern KZN, whale fossils in the
                                                                                      Sahara, trilobites in the Karoo
                                                                                   •	 The three eras: Paleozoic, Mesozoic and Coenozoic
                                                                                                                                                                                                           LIFE SCIENCES GRADES 10-12




                                                                                      periods are each divided into periods (Names of
                                                                                      periods not to be memorised):
                                                                                   •	 Geological Timescale
                                                                                   The meaning and use of timescales (details not to be
                                                                                   memorised).
                                                                                   •	 Cambrian Explosion
                                                                                   The Cambrian Explosion, which gives us insights into
                                                                                   the origins of the major forms of all animal groups.


                                                                                   In the last four million years, significant changes have
                                                                                   occurred in species occurring in Africa (e.g., humans)




CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
                                                                                   (Link with Grade 12).
                                                                                   •	 Mass Extinctions                                           •	 Various hypotheses have been proposed for
                                                                                                                                                    the extinction, 65 million years ago, such as the
                                                                                   There have been five mass extinctions throughout
                                                                                                                                                    meteorite impact theory and the volcanism evidence
                                                                                   history, two of which are particularly important: 250 mya
                                                                                                                                                    (in India) theory. Select ONE of these hypotheses
                                                                                   (the extinction of about 90% of all life on Earth) and
                                                                                                                                                    and describe the evidence scientists have gathered
                                                                                   65 Mya (the extinction of many species, including the
                                                                                                                                                    in support of it. (Nature of science)
                                                                                   dinosaurs).
                                                                                   The rate of extinction on the Earth at present is higher
                                                                                   than at any time in the past. The present time has been
                                                                                   called the sixth extinction (Links to Grades 11 and 12).
TERM 4
                    •	 Fossil Formation and Methods of Dating Them                  •	 Examine fossils at a museum or fossil site or study
                    Fossil formation and methods of dating them, e.g.,                 photographs of fossils.




CAPS
                    radiometric dating and relative dating.                         •	 Optional: Use plaster of Paris to construct a ‘fossil’.
                    •	 Key Events
                    There is evidence from South Africa of certain key              •	 Map the Key fossil sites on a map of South Africa
                    events in life’s history:
                    •	 origins of the earliest forms of life: evidence of single-
                       celled fossilised bacteria (stromatolites) from many
                       parts of South Africa;
                    •	 soft-bodied animals in Namibia, Northern Cape;
                    •	 early land plants in the Grahamstown area;
                    •	 forests of primitive plants such as Glossopteris near
                       Mooi River and Estcourt;
                    •	 location of coal deposits in South Africa (map only);
                    •	 the coelacanth as a ‘living fossil’ found on the
                       Northern KwaZulu-Natal coast;
                    •	 mammal-like reptiles found in the Karoo (e.g.
                       Lystrosaurus and Thrinaxodon);
                    •	 dinosaurs (in the foothills of Drakensberg and Maluti
                       mountains), as well as cone-bearing plants;
                    •	 early mammals (Eastern Cape and Lesotho);
                    •	 humans and pre-humans (eg Gauteng, (Cradle of
                       Humankind) Namibia, North West (Taung), Free
                       State (Florisbad), KwaZulu-Natal (Border Cave) and,
                       Limpopo (Makapansgat)).
                    Understanding Fossils
                    •	 Scientists use deductive reasoning (inference) to
                       understand fossils and the history of life on Earth.
                    The impact of humans on biodiversity and the natural
                    environment.




37
       Total: 6     Fossil Tourism
       weeks        Fossil tourism is a source of income and employment in
                                                                                                                                                 LIFE SCIENCES GRADES 10-12




       (24 hours)   some localities.
TERM 4
                                                    Assessment   •	 One formal recorded class test                           Practical examination(1 hour)




38
                                                                 •	 One project/assignment
                                                                 •	 End-of-year examination (2 x 2½ hours)                   Note: The practical work done during the year must develop the range of skills described
                                                                 Assessment for learning (informal) using a variety of       in Specific Aim 2. The practical examination will assess some of these skills.
                                                                 strategies and appropriate forms of assessment in
                                                                 exercises, summaries, essays, tests, etc.
                                                                 Refer to range of skills specified in Specific Aims 1 and
                                                                 3.
                                                                 Note that knowledge and understanding of investigations
                                                                 and practical work should also be assessed in written
                                                                 worksheets, reports, homework exercises and tests.
                                                                 The cognitive skills listed under Specific Aims 1 and
                                                                                                                                                                                                                        LIFE SCIENCES GRADES 10-12




                                                                 3 will also apply to knowledge and understanding of
                                                                 investigations.




CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
3.2 	 GRADE 11: CONTENT

                                                                                                  TERM 1




CAPS
        Strand 1: Diversity, Change and Continuity
        Life exists in a wide variety of forms which live in different niches. This section enables learners to be exposed to an array of life forms from microorganisms to macroscopic plants
        and animals. These are organised according to a man-made system of classification based on observable features. Learners explore the roles of organisms in an ecosystem including
        microorganisms that are a major cause of diseases. This strand also includes some evolutionary development in plant and animal phyla.
        Time          Topic              Content                                                      Investigations                                            Resources
        3 weeks       Biodiversity        Biodiversity                                                •	 Where possible, the prevalence of bacteria/fungi       •	   Textbooks
        (12 hours)    and                •	 Microorganisms: basic structure and general                  should be demonstrated by growing cultures on agar     •	   Reference books
                      Classification        characteristics of the following groups (links with          plates, or bread mould (fungus) on bread.              •	   Charts
                      of                    Grade 9 and 10):                                                                                                    •	   Agar
                      Microorgaisms         -	viruses                                                                                                           •	   Petri dishes
                                            -	bacteria                                                                                                          •	   Hand lenses
                                            -	protista
                                            -	fungi.
                                         (Macroscopic organisms in the protista and fungi should
                                         only be mentioned - not studied in any detail)
                                         •	 Mention of the roles that these groups play in
                                            maintaining balance in the environment and web of
                                            life.
                                         •	 Symbiotic relationships, including, nitrogen fixing
                                            bacteria in plants and E.Coli in the human intestine
                                            (link with Grade 10).
                                         •	 The effect and management of one disease from             •	 Look for evidence of bacterial/fungal diseases on
                                            each of the four groups:                                     plants (school and home). Map the distriution of one
                                            -	 viruses (rabies, HIV/AIDS, influenza)                     disease in the study area.
                                            -	 bacteria (blight, cholera, tuberculosis, anthrax)
                                            -	 protists (malaria)
                                            -	 fungi (rusts, thrush, ringworm, athlete’s foot).
                                         •	 Immunity, including plants and animals’ immune
                                            responses of against the infecting microorganism
                                            Vaccinations (briefly).
                                         •	 The use of drugs, e.g., antibiotics; effect on
                                            microorganisms
                                         •	 The use of microorganisms to produce medicines




39
                                            (e.g., insulin and antibiotics).
                                         •	 Traditional technology to produce, e.g., beer, wine
                                                                                                                                                                                                 LIFE SCIENCES GRADES 10-12




                                            and cheese.
TERM 1
                                                    3 weeks      Biodiversity of   •	 Grouping of bryophytes, pteridophytes,                    •	 Observe and draw relevant macroscopic parts to          •	 Text books




40
                                                                 Plants               gymnosperms and angiosperms according to the                 provide examples of each of the following divisions:
                                                    (12 hours)                                                                                                                                             •	 Plant specimens
                                                                 (Focus on the        presence/absence of:                                           -	 bryophytes: moss plant                             •	 Identification guides/keys
                                                                 Developmental        -	 vascular tissue (xylem and phloem)                          -	 pteridophytes: rhizome, frond with sori            •	 Hand lens
                                                                 Lines and Not
                                                                                      -	 true leaves and roots                                       -	 gymnosperms: needles, cones and seeds; and
                                                                 on In-Depth                                                                                                                               •	 Micrographs
                                                                                      -	 seeds or spores                                             -	 angiosperms: flower, fruit and seeds.
                                                                 Studies of                                                                                                                                •	 Charts
                                                                 Life Cycles.         -	fruit.
                                                                                                                                                                                                           •	 Models
                                                                 Learners          Decreasing dependence on water for reproduction from
                                                                                      Bryophytes to Angiosperms                                                                                            •	 Microscopes
                                                                 should have
                                                                 a basic                                                                                                                                   •	 Prepared slides
                                                                 understanding
                                                                 of Phylogenetic
                                                                 Trees as
                                                                                                                                                                                                                                           LIFE SCIENCES GRADES 10-12




                                                                 reconstructions
                                                                 of evolutionary
                                                                 pathways) and
                                                                 cladograms


                                                                                   •	 Asexual and sexual reproduction, name                     •	 Draw a phylogenetic tree showing the evolutionary
                                                                                      advantages and disadvantages of each.                        history of the four plant groups and major structural
                                                                 Reproduction
                                                                                   •	 Flowers as reproductive structures                           changes in their history of development.
                                                                 in Plants
                                                                                   	 Adaptations for pollination through (different             •	 Dissect an example of each of the following types of    Various flowers
                                                                                      pollinators) wind, insects and birds (South African
                                                                                      examples only) differences and similarities.                 flowers:                                                Scalpels or blades
                                                                                                                                                     -	 wind pollinated                                    Hand lenses




CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
                                                                                                                                                     -	 insect pollinated                                  Micrographs
                                                                                                                                                     -	 bird pollinated.
                                                                                                                                                Record observations in a comparative table.
                                                                                   •	 The Significance of Seeds                                 Optional: Germinate seeds: record process.                 Seeds
                                                                                      -	 seed banks;
                                                                                      -	 seeds as a food source; and
                                                                                      -	 endemic species in South Africa.
TERM 1
       2 weeks      Biodiversity of   •	 The relationship between the body plan and grouping         •	 Calculate approximate surface area to volume ratios       •	 Textbooks
       (8 hours)    Animals with a       of animals in phyla. The concept of a phylum.                  of selected examples.                                     •	 Reference books




CAPS
                    focus on six of   •	 Six phyla (out of about 30 in the animal kingdom):          •	 Observe examples from as many phyla as possible           •	 Photographs
                    the major phyla                                                                     (photographs/DVDs).
                                         -	Porifera                                                                                                               •	 DVDs if possible.
                                         -	Cnidaria                                                  •	 Select one phylum and design a poster to show
                    (Focus on the                                                                       diversity in that phylum in South Africa.
                                         -	Platyhelminthes
                    Developmental
                                         -	Annelida
                    Lines and
                    Phylogenetic         -	Arthropoda
                    Trees. No            -	Chordata.
                    Further Details   •	 Key features in respect of body plans:                      •	 Construct a comparative table of these four key
                    are Required                                                                        features in the six selected phyla.
                                         -	 symmetry and cephalisation;
                    Regarding the
                    Morphology of        -	 the number of tissue layers developed from
                    the Six Phyla).          embryo;
                                         -	 the number of openings in the gut;
                                         -	 coelom and blood systems.
                                      •	 The relationship between body plans and modes
                                         of living for each of the six phyla; similarities and
       Total
                                         differences.
       8 weeks
                                      •	 The role of invertebrates in agriculture and ecosystems
       (32 hours)
                                         (e.g., pollination, decomposition, soil aeration etc.)
       Assessment                     •	 One formal recorded class test.                             •	 One practical task.
                                      •	 Assess learning (informal) using a variety of
                                         strategies and appropriate forms of assessment in
                                         tests, homework exercises, worksheets, reports,
                                         summaries, essays, etc.
                                      Refer to the range of skills listed under Specific Aims
                                                                                                     •	 Refer to the range of skills specified under Specific Aim 2.
                                      1 and 3. Note that knowledge and understanding to
                                      investigations and practical work should also be assessed
                                      in written worksheets, reports, homework exercises and
                                      tests. The cognitive skills listed under Specific Aims 1 and




41
                                      3 will also apply to the knowledge and understanding of
                                      investigations.
                                                                                                                                                                                         LIFE SCIENCES GRADES 10-12
TERM 2
                                                    Strand 2: Life Processes in Plants and Animals




42
                                                    Organisms require energy to stay alive. They get this in one of two ways: by harnessing radiant energy from the sun and transforming it into chemical energy which they can use
                                                    (autotrophs) or (if they cannot do this themselves), by eating other organisms (heterotrophs). The energy transformations that sustain life are include photosynthesis, (where energy is
                                                    incorporated in to food), animal nutrition (where the food is processed so that it can get to the cells), and cellular respiration (how this energy is made available to organisms in order
                                                    to stay alive). Gaseous exchange between an organism and its environment is necessary for photosynthesis and cellular respiration. Life processes also involve the removal of carbon
                                                    dioxide and later the removal of nitrogenous wastes from the body through the kidney.
                                                    Time                Topic                                   Content                                                    Investigations                                  Resources
                                                    3 weeks       Energy               Photosynthesis                                                Essential                                                    •	 Textbooks
                                                    (12 hours)    Transformations      •	 process of photosynthesis using words and symbols:         •	 Investigate photosynthesis by showing that                •	 Living plants
                                                                  to Sustain Life         the intake of raw materials, trapping and storing               -	 starch is produced during photosynthesis; and        •	 Suitable equipment
                                                                                          of energy, formation of food in chloroplasts and its
                                                                                                                                                          -	 light is necessary for photosynthesis.               •	 Chemicals
                                                                                          storage. The release of oxygen. Mention only of light
                                                                                                                                                     •	 The following investigations can be done (by
                                                                                                                                                                                                                                                  LIFE SCIENCES GRADES 10-12




                                                                                          and dark phases (no biochemical details of light and
                                                                                                                                                        learners) as experiments or as demonstrations:
                                                                                          dark phases are required);
                                                                                                                                                          -	 carbon dioxide is necessary for photosynthesis;
                                                                                       •	 importance of photosynthesis: release of oxygen,
                                                                                          uptake of carbon dioxide from atmosphere, food                  -	 chlorophyll is necessary for photosynthesis
                                                                                          production (trapping energy);                                   -	 oxygen is produced during photosynthesis;
                                                                                       •	 effects of variable amounts of light, carbon dioxide       or
                                                                                          and temperature on the rate of photosynthesis (brief            -	 data can be provided and interpreted by learners.
                                                                                          discussion together with graphs).
                                                                                       •	 The role of carbon dioxide enrichment, optimum light
                                                                                          and optimum temperatures in greenhouse systems
                                                                                          to improve crop yields (link to environmental issues
                                                                                          discussed later).




CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
                                                                                       •	 Role of ATP as an important energy carrier in the
                                                                                          cell.
TERM 2
       3 weeks      Animal Nutrition   •	 The differences in dentition for herbivorous,                                                                       •	 Textbooks
       (12 hours)   (Mammals)             carnivorous and omnivorous lifestyles in terms of                                                                   •	 Newspapers




CAPS
                                          nutritional requirements and energy relationships                                                                   •	 Popular magazines
                                          (link with ecology - food chains).
                                                                                                   •	 Obtain intestines of a sheep from a butcher and trace   •	 Sheep intestines
                                       •	 Human nutrition                                             the passage that food will take.                           obtained from a butchery.
                                       The macro-structure of the alimentary canal and             •	 Cut open the stomach, portion of the small intestine    •	 Scalpels or sharp knives
                                       associated organs and the functions of the different           and a portion of the large intestine to compare the     •	 Hand lenses
                                       parts.                                                         structure of the wall in each.
                                       •	 The Processes of ingestion, digestion, absorption,
                                          assimilation and egestion and the significance of
                                          each:
                                          -	 Mechanical or physical digestion: types and
                                             functions of different kinds of teeth, processes of
                                             chewing. Peristalsis                                                                                             •	 DVD/video to show
                                          -	 Chemical digestion: Enzymes: functions of                                                                           dissection of a mammal
                                             carbohydrases, proteases and lipases: where                                                                         in progress
                                             produced; substrate, pH and end-products
                                             (Specific enzymes need not be named - link to
                                             enzyme activity.)
                                          -	 Absorption: small intestine as a region of most
                                             absorption of digested food; adaptations to
                                             increase surface area. Structure (to tissue level)
                                             and significance of villi. Importance of hepatic
                                             portal system in the transport of absorbed food to
                                             the liver and then through hepatic vein to the rest
                                             of the body
                                          -	 Assimilation: incorporation of glucose and
                                             amino acids into cells, the role of the liver:
                                             glucose metabolism, deamination of excess
                                             amino acids, and the breakdown of alcohol, drugs
                                             and hormones.
                                       •	 Homeostatic Control
                                          Hormonal control of blood sugar levels.Increase in




43
                                          the number of people affected by diabetes in recent
                                          years and brief explanation of diabetes.
                                                                                                                                                                                             LIFE SCIENCES GRADES 10-12
TERM 2
                                                    •	 The relationships between food intake, energy,                                                                     •	 Selection of food




44
                                                       growth and health. The importance of a balanced diet                                                                  packaging
                                                       and changing requirements due to age, gender and
                                                       activity levels.
                                                       -	 Different diets due to cultural, religious, personal
                                                          and health choices, e.g., vegan, vegetarian,
                                                          halaal, kosher
                                                       -	 Interpret dietary information on food packaging;       •	 Calculate the nutritional value of a meal/diet. Use
                                                       -	 Dietary supplements: for health, sport, beauty            dietary information or food packaging.
                                                          and anti-ageing (link to organic and inorganic
                                                          substances)
                                                       -	 Malnutrition: the reason for and the effects of                                                                 •	 Photographs of the
                                                          malnutrition with respect to unbalanced diets                                                                      effects of kwashiorkor,
                                                                                                                                                                                                       LIFE SCIENCES GRADES 10-12




                                                          (e.g., kwashiorkor), starvation (e.g., marasmus                                                                    marasmus, anorexia,
                                                          and anorexia), bulimia, food allergies, coronary                                                                   obesity
                                                          heart disease, diabetes and obesity.
                                                    •	 Analysis of information in the popular press, or any
                                                       other sources, with respect to malnutrition.
                                                    •	 Tooth decay related to diet and fluoride in water
                                                       supplies and its effect on teeth.
                                                                                                                                                                          Magazines, newspaper
                                                    •	 The effects of alcohol and drug abuse and the
                                                                                                                                                                          articles etc.
                                                       dangers associated with their misuse.




CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
TERM 2
       1½ weeks     Energy             •	 Cellular Respiration                                     •	 Design an investigation or demonstration to show          •	 Textbooks
       (6 hours)    Transformations    	    The process of respiration and uses of energy for         that:                                                     •	 Snails




CAPS
                    to Sustain Life.        living cells:                                             -	 oxygen is used by living organisms during                  or
                                       -	 aerobic respiration: in cytoplasm and mitochondria;            respiration.
                                                                                                                                                                •	 seedlings
                                          use words and symbols: glycolysis, Krebs cycle and          -	 carbon dioxide is produced by living organisms
                                                                                                                                                                •	 Chemicals
                                          oxidative phosphorylation                                      during respiration
                                                                                                                                                                •	 Appropriate
                                           (no biochemical detail is required);                       or
                                                                                                                                                                equipment
                                       -	 anaerobic respiration: production of lactic acid in         -	 provide relevant data that can be interpreted by
                                          muscles during exercise; words and symbols (no                 learners. Identify variables, suggest controls for
                                          biochemical detail of process is required);                    variables and record observations
                                       -	 The role of anaerobic respiration in the industry, e.g
                                          beer brewing and bread making.
       Total                           A comparison between aerobic respiration and
       7½ weeks                        anaerobic respiration in terms of raw materials required,
       (34 hours)                      products and relative amounts of energy released.

       Assessment                      •	 One formal recorded class test.                          •	 One practical task
                                       •	 Mid-year examination (2½ hours)
                                       •	 Assessment for learning (informal) using a variety
                                          of strategies and appropriate forms of assessment
                                          in tests, homework exercises, worksheets, reports,
                                          summaries, essays, etc.
                                                                                                   •	 Refer to the range of skills specified under Specific Aim 2
                                       Refer to the range of skills listed under Specific Aims
                                       1 and 3. Note that knowledge and understanding
                                       to investigations and practical work should also be
                                       assessed in written worksheets, reports, homework
                                       exercises and tests. The cognitive skills listed under
                                       Specific Aims 1 and 3 will also apply to knowledge and
                                       understanding of investigations.




45
                                                                                                                                                                                 LIFE SCIENCES GRADES 10-12
TERM 3
                                                    Strand 2: Life Processes in Plants and Animals (continued)




46
                                                    Time              Topic                                  Content                                               Investigations                                  Resources
                                                    2½ weeks     Gaseous           Distinguish between cellular respiration, breathing and                                                                 •	 Textbooks
                                                    (10 hours)   Exchange          gas exchange. The need for gas exchange.                                                                                •	 Models
                                                                                   •	 Requirements of efficient Gas Exchange Organs:           •	 Use books end on end and one on top of another           •	 Charts
                                                                                      -	 large surface area                                       to illustrate and calculate the differences in respect
                                                                                                                                                                                                           •	 Dissection board   and
                                                                                                                                                  of surface area to volume ratio which is caused
                                                                                      -	thin                                                                                                                  instruments
                                                                                                                                                  by different shapes: e.g., flatworm (Planaria) and
                                                                                      -	   moist                                                  earthworm.                                               •	 DVDs/videos
                                                                                      -	   well ventilated                                                                                                 •	 Hand lenses
                                                                                      -	   protected
                                                                                      -	   transport system.
                                                                                                                                                                                                                                       LIFE SCIENCES GRADES 10-12




                                                                                   These requirements are met in different ways in different
                                                                                   environments, e.g., compare aquatic and terrestrial
                                                                                   animals and plants. Brief mention of how these
                                                                                   requirements are met in:
                                                                                      -	 dicotyledonous plant
                                                                                      -	earthworm
                                                                                      -	   insect
                                                                                      -	   bony fish
                                                                                      -	   mammal.
                                                                                   •	 Human Gas Exchange:                                      •	 Observe and investigate the structure of the lungs,
                                                                                   	 The structure (macro and tissue level), location,            diaphragm, associated pulmonary blood vessels and




CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
                                                                                     adaptations and functioning of the ventilation system:       the heart of a pig or a sheep obtained from a butcher.

                                                                                      -	   trachea                                             •	 Construct a model of the human breathing system.
                                                                                                                                                  Explain the limitations of the model.
                                                                                      -	   epiglottis
                                                                                                                                               •	 Demonstrate that expired air contains carbon dioxide.
                                                                                      -	   bronchi
                                                                                      -	   bronchioles
TERM 3
          -	lungs                                                     •	 Measure and compare the depth of breathing of
          -	ribs                                                         two or more learners and the effect of exercise on




CAPS
                                                                         breathing/pulse rate. Interpret data on depth and rate
          -	 intercostal muscles
                                                                         of breathing.
          -	diaphragm
          -	alveoli.
       Ventilation of the lungs:
          -	 gaseous exchange in alveoli;
          -	 the transport of gases around the body;
                                                                      •	 Analyse and interpret data showing the effects of
          -	 gaseous exchange in tissues; and
                                                                         altitude on the number of red blood cells and the
          -	 composition of inspired air vs. expired air- analyse        consequent effect on athletes at different altitudes
              data.                                                      (Links to Grade 10.)
       Brief mention of the homeostatic control of breathing.
       •	 Diseases and abnormalities: causes symptoms and
          treatment of TB in South Africa. (Link to biodiversity -
          microorganisms)
       Brief study of other respiratory diseases:
          -	asthma
          -	 hay fever
          -	bronchitis
          -	emphysema
          -	 lung cancer.
         The effects of smoking on gaseous exchange. Smoking
         legislation in South Africa.
       •	 Brief mention of artificial respiration and the effect of
          mouth to mouth resuscitation.
       •	 The effects of altitude on gaseous exchange, e.g.,
          the performance of athletes in Johannesburg versus
          Durban or Cape Town.




47
                                                                                                                                  LIFE SCIENCES GRADES 10-12
TERM 3
                                                    2 ½ weeks    Excretion in   •	 Excretion in Various Organs: Brief role of the                                                                            •	 Textbooks




48
                                                    (10 hours)   Humans            following:                                                                                                                •	 Charts
                                                                                  -	 the lungs;                                                                                                              •	 Models
                                                                                  -	 the kidneys and bladder;                                                                                                •	 Hand lenses
                                                                                  -	 the liver;
                                                                                  -	 the alimentary canal (gut); and
                                                                                  -	 the skin.
                                                                                  The substances excreted by each and the origins of
                                                                                  these substances.
                                                                                •	 Urinary system
                                                                                The structure of the:                                            •	 Dissection of a sheep’s or pig’s kidney (obtained from   •	 Sheep or pig kidney (from
                                                                                                                                                    butchery). Use a worksheet to identify the following:       butchery)
                                                                                  -	 urinary system: position of kidneys, ureters, bladder,
                                                                                                                                                                                                                                            LIFE SCIENCES GRADES 10-12




                                                                                     urethra.                                                       capsule, cortex, medulla, pyramids, blood vessels,       •	 Scalpel/blade
                                                                                                                                                    pelvis, ureter and hilum.
                                                                                  -	 kidney: structure and functioning, removal of urea                                                                      •	 Dissecting boards
                                                                                     and excess water and salts, re-absorption of glucose        	 Draw and label the dissected kidney
                                                                                                                                                                                                             •	 Scissors
                                                                                     and some salts.
                                                                                  -	 nephron: structure and functioning; ultra-filtration, re-                                                               Note: A pig’s kidney more
                                                                                     absorption, tubular excretion, pH control, formation of                                                                 closely resembles that of a
                                                                                     urine                                                                                                                   human.
                                                                                •	 Homeostatic control of water and salts: role of ADH and
                                                                                   aldosterone: Dialysis and kidney transplants.
                                                                                •	 Mention of diseases affecting kidney function, e.g.
                                                                                   kidney stones, kidney failure due to overuse of some




CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
                                                                                   painkillers, effect of bilharzia infection.
TERM 3
       Strand 3: Environmental Studies
       Organisms interact with other organisms and with the environments in which they live. This section is structured so that learners must explore the impact of people on their environments




CAPS
       (global, international and local). Learners are encouraged to look for and suggest solutions to local environmental problems. The intention is that learners will become more informed and
       more sensitive to environmental issues and will modify their behaviour to lessen their impact on the environment.
       Time                Topic                                  Content                                                  Investigations                                   Resources
       4 weeks       Population          •	 Population Size                                            •	 Determine the size of a population by quadrant or •	 Textbooks
       (24 hours)    Ecology             	   Immigration, emigration, mortality, births. Fluctuations.    simple sampling e.g., simulated mark/recapture.   •	 Reference books
                                             Limiting factors and carrying capacity.                   	 Collect and record data,                           •	 Posters
                                         	   Logistic and geometric growth curves with phases.         	 Interpret data                                     •	 Charts
                                                                                                      	   Calculate/estimate the population size.                   •	 Brochures
                                                                                                      •	 Case study: Rationale for culling, e.g. elephants in the
                                                                                                         Kruger National Park as an example of an application
                                                                                                         of estimating population size (link to researched
                                                                                                         reasons for culling).
                                                                                                                                                                 •	 DVDs
                                                                                                      •	 Draw up a public survey form to test the public opinion
                                                                                                         about culling. Show results in a pie graph.             •	 Newspapers
                                                                                                                                                                    •	 Magazines
                                         •	 Interactions in the Environment                                                                                         •	 Watching nature
                                             -	 predation: two South African examples of predator-                                                                     programmes on TV
                                                prey relationships: graphs;
                                             -	 competition:
                                                interspecific: for light, space, water, shelter and
                                                food;
                                                intraspecific: for food, access to mates, water,
                                                space, and shelter; survival is determined by
                                                access to the above, ecological niches;
                                             -	 specialisation: competitive exclusion and resource
                                                partitioning; discuss one example of coexistence in
                                                animals and one example in plants;




49
                                                                                                                                                                                                    LIFE SCIENCES GRADES 10-12
TERM 3
                                                                    -	 parasitism: two examples from South Africa; one •	 Draw a life cycle of the bilharzia parasite or tapeworm




50
                                                                       species benefits                                   (simplify larval stages). (Links to animal biodiversity)
                                                                    -	 mutualism: two examples from South Africa; both •	 Identify an area in or close to the school grounds where
                                                                       species benefit;                                   succession is taking/has taken place. (e.g., in the goal
                                                                    -	 commensalism: two examples from South Africa.      area on the sports field at the end of a season or a
                                                                                                                          roadside that has been scraped).

                                                                 •	 Social Organisation: The benefits of herds/flocks
                                                                    (avoidance); packs (hunting); dominance; and the
                                                                    division of tasks (castes) (mention only).
                                                                 •	 Community change over time: Succession
                                                                 Primary and secondary succession and possible endpoints
                                                                    depending on environmental fluctuations (mention
                                                                                                                                                                                                LIFE SCIENCES GRADES 10-12




                                                                    only).
                                                                 •	 Human Population
                                                                 Reasons for exponential growth:
                                                                    -	 age and gender distributions for different countries,
                                                                       including South Africa;
                                                    Total
                                                                    -	 forecast of South Africa’s population growth
                                                    9½ Weeks           over the next twenty years and predict possible
                                                    (38 Hours)         consequences for the environment.
                                                    Assessment   •	 One formal recorded class test.                              •	 One practical task.
                                                                 •	 Assessment for learning (informal) using a variety
                                                                    of strategies and appropriate forms of assessment
                                                                    in tests, homework exercises, worksheets, reports,




CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
                                                                    summaries, essays, etc.
                                                                                                                                 •	 Refer to the range of skills specified in Specific Aim 1.
                                                                 Refer to the range of skills listed under Specific Aims 1 and
                                                                 3. Note that knowledge and understanding to investigations
                                                                 and practical work should also be assessed in written
                                                                 worksheets, reports, homework exercises and tests. The
                                                                 cognitive skills listed under Specific Aims 1 and 3 will also
                                                                 apply to knowledge and understanding of investigations.
TERM 4
       Stand 3 Environmental Studies (Continued): Human Impact on the Environment
       Note: Human Impact on the Environment must be completed in Grade 11, but this topic will be examined in both Grade 11 and in the National Senior Certificate at the end of Grade 12.




CAPS
       In this knowledge strand, it is important to emphasise the interrelatedness and interdependence of the human impacts and the environment.
       Time               Topic                                  Content                                                Investigations                                 Resources
       7 weeks      Human               Causes and consequences of the following (relate to         •	 Practical observation of ONE example of human           •	 Textbooks
       (28 hours)   Impact on the       conditions and circumstances in South Africa):                 influence on the environment in the local area (e.g.,   •	 Reference books
                    Environment:        •	 The atmosphere and climate change                           the impact of alien species on biodiversity). Written
                                                                                                                                                               •	 Reports in the media
                    Current Crises                                                                     report on the chosen example.
                                           -	 carbon dioxide emissions;                                                                                        •	 Share - Net booklets
                    for Human
                                           -	 concept of ‘carbon footprint’ and the need to
                    Survival:
                                              reduce the carbon footprint;
                    Problems to
                    be Solved              -	deforestation;
                    Within the Next        -	greenhouse effect and global                warming:
                    Generation               desertification, drought and floods;
                                           -	 methane emissions;
                                           -	 ozone depletion.
                                        •	 Water
                                        •	 Availability:
                                           -	 Construction of dams
                                           -	 Destruction of wetlands
                                           -	 Poor farming practices
                                           -	 Droughts and floods
                                           -	 Exotic plantations and depletion of water table
                                           -	 Boreholes and effects on aquifers
                                           -	Wastage
                                           -	 Cost of water
                                        •	 Quality:
                                           -	 Water for domestic use, industry, agriculture and
                                              mining: pollution, diseases, eutrophication and
                                              algal bloom.




51
                                           -	 The effect of mining on quality of water
                                           -	 Thermal pollution
                                                                                                                                                                                              LIFE SCIENCES GRADES 10-12
TERM 4
                                                                    -	 The need for water purification and recycling




52
                                                                    -	 Alien plants, e.g., Eichornia
                                                                 •	 Food Security (link with population ecology dynamics)
                                                                    -	 human exponential population growth;
                                                                    -	 droughts and floods (climate change);
                                                                    -	 poor farming practices: monoculture; pest control,
                                                                       loss of topsoil and the need for fertilisers;
                                                                    -	 alien plants and reduction of agricultural land;
                                                                    -	 the loss of wild varieties: impact on gene pools;
                                                                    -	 genetically engineered foods;
                                                                    -	wastage.
                                                                                                                                                                                              LIFE SCIENCES GRADES 10-12




                                                                 •	 Loss of Biodiversity (the sixth extinction)                 •	 Rhino poaching in South Africa: read articles and
                                                                    -	 habitat destruction: farming methods, e.g.,                 make suggestions on how it can be prevented.
                                                                       overgrazing and monoculture, golf estates, mining,
                                                                       urbanisation, deforestation; loss of wetlands and
                                                                       grasslands;
                                                                    -	 poaching, e.g., for rhino horn, ivory and ‘bush
                                                                       meat’;
                                                                    -	 alien plant invasions: control using mechanical,
                                                                       chemical and biological methods; and
                                                                    -	indigenous knowledge systems and the
                                                                      sustainable use of the environment e.g., devils’
                                                                      claw, rooibos, fynbos, the African potato (Hypoxis)




CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
                                                                      and Hoodia.


                                                                 •	 Solid Waste Disposal                                        •	 Analyse the solid waste generated in the household
                                                                    -	managing dumpsites for rehabilitation               and      in one week, including paper, metals and plastic.
                                                                      prevention of soil and water pollution;                      Estimate the percentage that could be recycled or
                                                                    -	 the need for recycling;                                     reused.
                                                    Total           -	 using methane from dumpsites for domestic use:           •	 Visit a municipal landfill site, or a local refuse dump.
                                                    7 weeks            heating and lighting; and                                   Observe rehabilitation (or lack thereof) in practice.

                                                    (28 hours)      -	 safe disposal of nuclear waste.                          •	 Assess the effectiveness of waste management.
TERM 4
       Assessment   •		One formal recorded class test.                          One practical exam (1 hour)
                    •	 One project/assignment.




CAPS
                    •	 End-of-year examination: 2 x 2 ½ hours.
                    •	 Assessment for learning (informal) using a variety
                       of strategies and appropriate forms of assessment
                       in tests, homework exercises, worksheets, reports,
                       summaries, essays, etc.
                    Refer to the range of skills listed under Specific Aims
                                                                                Note: Refer to the range of skills specified in Specific Aim 2.
                    1 and 3. Note that knowledge and understanding to
                    investigations and practical work should also be assessed
                    in written worksheets, reports, homework exercises and
                    tests.
                    The cognitive skills listed under Specific Aims 1 and
                    3 will also apply to knowledge and understanding of
                    investigations.




53
                                                                                                                                                  LIFE SCIENCES GRADES 10-12
3.3	    GRADE 12: CONTENT

                                                                                                                                                  TERM 1




54
                                                     Strand 1: Life at Molecular, Cellular and Tissue Level
                                                     All living organisms are made of atoms which combine to form molecules. Of these, DNA (or Deoxyribonucleic Acid) carries the genetic code for cell specialisation and cell functioning and
                                                     DNA packages, as genes, determine what an organism will look like and how it will function. Plant and animal cells have a complex organisation which enables them to carry out the basic
                                                     processes of life, i.e. movement, nutrition, respiration, excretion, growth, reproduction and responding to stimuli. Cells are specialised and form tissues which perform particular functions.
                                                     Tissues are arranged into organs which are also specialised to carry out particular functions.
                                                     In order to understand species, speciation, biodiversity and change, it is essential to understand how DNA and chromosomes enable continuity and change.
                                                     Time                Topic                                     Content                                                    Investigations                                  Resources
                                                     2½weeks       DNA: The Code        •	 Deoxyribonucleic acid (DNA)                                   If possible:                                                •	   Textbooks
                                                     (10 hours)    of Life                  -	 Location in the cell; chromosomes, genes and              •	 Perform a simple process to extract DNA and examine      •	   Micrographs
                                                                                               extranuclear DNA;                                            the threads                                              •	   Equipment
                                                                                                                                                                                                                                                       LIFE SCIENCES GRADES 10-12




                                                                                            -	 Discovery of the structure DNA by Watson, Crick,                                                                      •	   Chemicals
                                                                                               Franklin and Wilkins;
                                                                                            -	 Structure of DNA;
                                                                                            -	 Role of DNA: genes and non-coding DNA;                    If possible:
                                                                                            -	   Replication: cell cycle (link to Grade 10): necessity   •	 DNA ‘finger printing’/DNA profiling: (case study only)
                                                                                                 for exact copy.
                                                                                         Ribonucleic Acid (RNA)
                                                                                            -	 Types and location in cells;
                                                                                            -	 Structure of RNA;
                                                                                            -	 Transcription from DNA;
                                                                                            -	   Translation of RNA into proteins (protein synthesis)




CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
                                                                                                 (mRNA, tRNA): sequence of events; and
                                                                                            -	 Genetic code (basic understanding).
TERM 1
       2 weeks      Meiosis             •	 Meiosis: the process of reduction division              •	 Observe and draw prepared microscope slides,              •	 Textbooks
       (8 hours)                           -	 purposes of reduction division (gametogenesis           micrographs or models of cells in selected stages of      •	 Posters




CAPS
                                              and exceptions: mosses, ferns);                         meiotic cell division, e.g., crossing over in metaphase
                                                                                                                                                                •	 Models
                                                                                                      I; anaphase I, metaphase II, telophase II.
                                           -	 importance of meiosis: diploid to haploid:                                                                        •	 Microscopes
                                              production of gametes;
                                                                                                                                                                •	 Prepared microscope
                                           -	 introduction of genetic variation (random                                                                            slides or micrographs
                                              segregation, crossing over);
                                           -	 consequences of abnormal meiosis, e.g., Down’s
                                              syndrome
                                        •	 Mitosis and meiosis
                                          Similarities and differences between mitosis and
                                          meiosis (link to Grade 10)
       Strand 2: Life Processes in Plants and Animals
       This knowledge strand deals with the ways in which animals are able to respond to their environments in order to ensure survival. Learners explore different reproductive strategies
       in animals. Reproduction in humans is dealt with in more detail as a specific example of animal reproduction. This expands on the basic knowledge of human reproduction that was
       introduced in Grades 7 and 9.
       Time               Topic                                   Content                                               Investigations                                  Resources
       ½ week       Reproduction        •	 Diversity of reproductive strategies                                                                                 •	 Textbooks
       (2 hours)    in Vertebrates      Appropriate examples of different groups in the animal                                                                  •	 Charts
                                        kingdom to illustrate maximising reproductive success in                                                                •	 Reference books
                                        different environments:
                                                                                                                                                                •	 DVDs (if possible)
                                        -	 external or internal fertilisation
                                        -	 ovipary, ovovivipary, vivipary
                                        -	 amniotic egg
                                        -	 precocial and altricial development
                                        -	 parental care.




55
                                                                                                                                                                                              LIFE SCIENCES GRADES 10-12
TERM 1
                                                    3 weeks      Human          •	 The structure of male and female reproductive                 •	 Prepared microscope slides of an ovary, testes and a        •	 Textbooks




56
                                                    (12 hours)   Reproduction      systems; (link to Grade 7 and 9)                                 section through a penis. Identify tissues and different     •	 Charts
                                                                                •	 The unique human characteristics of some aspects of              structures
                                                                                                                                                                                                                •	 Micrographs
                                                                                   reproduction (link with Grade 9):                             •	 Observe and describe prepared microscope slides
                                                                                                                                                                                                                •	 Microscope
                                                                                   -	 puberty: main changes;                                        or micrographs or ultrasound pictures of embryonic
                                                                                                                                                                                                                •	 Prepared      microscope
                                                                                                                                                    development.
                                                                                   -	 gametogenesis: relate briefly to meiosis (no                                                                                 slides
                                                                                      individual names of stages);                               •	 If possible observe stages of pregnancy by watching
                                                                                                                                                                                                                •	 Ultrasound pictures of
                                                                                   -	 menstrual cycle: emphasis on hormonal control;             	   DVDs of the development of an embryo and the birth
                                                                                                                                                                                                                   embryonic development
                                                                                                                                                     process.
                                                                                   -	 fertilisation   and    development     of   zygote    to                                                                  •	 DVDs
                                                    Total                                                                                        •	 Observe contraceptive devices
                                                                                      blastocyst;
                                                    8 weeks
                                                                                   -	gestation (mention briefly);
                                                    (32 hours)
                                                                                   -	 implantation     and    development:    the   role    of
                                                                                                                                                                                                                                              LIFE SCIENCES GRADES 10-12




                                                                                       placenta.
                                                    Assessment                  •	 One formal, recorded class test.                              •	 One practical task
                                                                                •	 Assessment for learning (informal) using a variety
                                                                                   of strategies and appropriate forms of assessment
                                                                                   in homework exercises, written worksheets, reports,
                                                                                   summaries, essays, tests, etc.
                                                                                Refer to range of skills specified in Specific Aims 1 and 3.
                                                                                Note that knowledge and understanding of investigations
                                                                                and practical work should also be assessed in written            •	 Refer to the range of skills specified in Specific aim 2.
                                                                                worksheets, homework exercises and tests. The cognitive
                                                                                skills listed under Specific Aims 1 and 3 will also apply to
                                                                                knowledge and understanding of investigations.




CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
TERM 2
       Strand 1: Life at Molecular, Cellular and Tissue Level (continued); and
       Strand 4: Diversity, Change and Continuity




CAPS
       Life exists in a variety of life forms and it is in the study of DNA, genetics and inherited characteristics that life at molecular level intersects with Strand 4: Diversity, Change and Continuity.
       In order to understand species, speciation, biodiversity and change, it is essential to understand how DNA and chromosomes enable continuity and change
       Time                 Topic                                    Content                                                      Investigations                                     Resources
       4 weeks        Genetics and         •	 Genes: Dominant and recessive genes and alleles               Solving genetic problems                                       •	 Textbooks
       (16 hours)     Inheritance          Mention of Mendel, father of genetics                           •	 Monohybrid crosses                                           •	 Reference books
                                           •	 Inheritance and variation                                    •	 Dihybrid crosses
                                           -	 Monohybrid crosses: phenotype and genotype,                  •	 Complete and incomplete dominance
                                              homozygous and heterozygous (pure bred and                   •	 Blood groups
                                              hybrid); examples of complete, incomplete/partial
                                                                                                           •	 Sex chromosomes and sexually linked diseases e.g.,
                                              dominance and codominance;
                                                                                                              haemophilia and colour blindness
                                             -	 Dihybrid crosses: phenotypes and genotypes.
                                                                                                           •	 Genetic lineages
                                           •	 Sex chromosomes
                                            Sex-linked alleles; sex-linked diseases
                                           •	 Mutations
                                             -	
                                              harmless and harmful mutations: examples
                                              of diseases, disorders; gene mutations and
                                              chromosomal aberrations; and
                                             -	 useful mutations, link with natural selection
                                           •	 Genetic engineering: Stem cell research, genetically
                                              modified organisms, biotechnology and cloning.
                                           •	 Mention mitochondrial DNA and the tracing of genetic
                                              links
                                           •	 Paternity testing and DNA finger printing (forensics)




57
                                                                                                                                                                                                               LIFE SCIENCES GRADES 10-12
TERM 2
                                                    Strand 2: Life Processes in Plants and Animals (continued)




58
                                                    This continues investigating the ways in which animals and plants are able to respond to their environments in order to ensure their survival.
                                                    Time                Topic                                  Content                                                   Investigations                                  Resources
                                                    4 weeks       Responding          •	 Humans have two systems: nerves and                                                                                    •	 Textbooks
                                                    (16 hours)    to the                 hormones that enable them to respond to the                                                                            •	 Wall charts
                                                                  Environment:           environment.
                                                                                                                                                                                                                •	 Scalpel or blade
                                                                  Humans              •	 Human nervous system
                                                                                        Reactions to stimuli in the surroundings.                                                                               •	 Models:
                                                                                          -	 Central Nervous System: Brain: Meninges for           •	 Model of the brain or a sheep’s brain in order to         	eye
                                                                                             protection, location and functions of cerebrum,          observe regions of brain.                                 	ear
                                                                                             cerebellum, corpus callosum, medulla oblongata,       	   Identify the cerebrum, cerebellum and spinal cord        	brain
                                                                                             spinal cord
                                                                                                                                                   •	 Examine a cross-section of spinal cord to observe
                                                                                                                                                                                                                                               LIFE SCIENCES GRADES 10-12




                                                                                                                                                                                                                •	 Sheep’s skull sawn
                                                                                          -	 Peripheral Nervous System: location and                  the white and grey matter.                                   in half to expose the
                                                                                             functions only
                                                                                                                                                                                                                   brain (obtained from the
                                                                                          -	 Autonomic Nervous System: location and                                                                                butchery)
                                                                                             functions only
                                                                                          -	 Nerves: Structure of a nerve : Nerve tissue:
                                                                                             structure of sensory neurons and motor neurons
                                                                                          -	 Reflex arc: Structure, function and significance
                                                                                             of a simple reflex arc. Significance of synapses                                                                   •	 Obtain sawn through
                                                                                                                                                   •	 Design an investigation to determine the reaction            vertebrae from butcher to
                                                                                      	•	 Disorders: Alzheimer’s disease and multiple                 time of different learners to a stimulus. Record the         show spinal cord.
                                                                                          sclerosis                                                   results and calculate the average time. Calculate
                                                                                      	•	 Injuries: Brain and spinal damage. Mention stem cell        the distance that will be travelled by a car travelling




CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
                                                                                          research and the possibility of repairing injuries.         at 100 km per hour within the average reaction
                                                                                      	•	 Effects of drugs: Dagga, heroin, ecstasy, tik, etc.         time. Apply this knowledge to safe driving: following
                                                                                          (Links to Grade 11)                                         distances..
TERM 2
                    •	 Receptors                                                                                                               •	 Eye of sheep or pig
                    Detection of a range of stimuli: light, sound, touch,                                                                         obtained from butchery




CAPS
                       temperature, pressure, pain and chemicals (taste
                       and smell). Details of the structure of the eye and ear
                       (only)
                       -	 Human eye: structure and functioning, binocular        •	 Dissect the eye of a sheep or pig. Observe the
                          vision, accommodation, pupil reflex                       different regions. Worksheet to be used to follow
                       -	 Short-sightedness, long-sightedness,                      instructions for dissecting and observing the
                          astigmatism, cataracts (brief explanations using          significant parts.
                          diagrams)
                       -	 Human ear: structure and functioning: hearing
       Total              and balance
       8 weeks         -	 Hearing defects: deafness, middle ear infections,
       (32 hours)         grommets
       Assessment   •	 One formal, recorded class test.                          •	 One practical task
                    •	 Mid-year examination (2½ hours) or control test
                    •	 Assessment for learning (informal) using a variety
                       of strategies and appropriate forms of assessment
                       in homework exercises, flow diagrams, written
                       worksheets, reports, summaries, essays, tests, etc.
                    Refer to range of skills specified in Specific Aims
                                                                                 •	 Refer to the range of skills specified in Specific Aim 2
                    1 and 3. Note that knowledge and understanding
                    of investigations and practical work should also be
                    assessed in written worksheets, homework exercises
                    reports, essays etc. The cognitive skills listed under
                    Specific Aims 1 and 3 will also apply to knowledge and
                    understanding of investigations.




59
                                                                                                                                                                           LIFE SCIENCES GRADES 10-12
TERM 3
                                                    Strand 2:Life Processes in Plants and Animals (Continued)




60
                                                    This continues investigating the ways in which animals and plants are able to respond to their environments in order to ensure their survival.
                                                    Time                Topic                                  Content                                                  Investigations                                 Resources
                                                    1½ weeks      Human               •	 Endocrine glands                                          •	 Research disorders caused by under-and over             •	 Textbooks
                                                    (6 hours)     Endocrine           Location in the body, hormones secreted, roles of               secretion of at least one hormone. Different learners   •	 Charts
                                                                  System              hormones of the following glands:                               should research different hormones. Brief written
                                                                                                                                                                                                              •	 Photographs of giantism,
                                                                                                                                                      report.
                                                                                      -	 Hypothalamus : ADH                                                                                                   dwarfism, and
                                                                                      -	 Pituitary gland : TSH, FSH,LH, prolactin, growth                                                                     persons suffering from:
                                                                                         hormone (link to reproduction)
                                                                                                                                                                                                              hypothyroidism
                                                                                      -	 Thyroid gland: thyroxin
                                                                                                                                                                                                              and hyperthyroidism
                                                                                      -	 Pancreas: insulin, glucagon
                                                                                                                                                                                                                                               LIFE SCIENCES GRADES 10-12




                                                                                      -	 Adrenal gland: adrenalin, aldosterone
                                                                                      -	 Gonads: oestrogen, progesterone and testosterone
                                                                                         (link to reproduction)
                                                                                      Examples of negative feedback mechanisms: TSH and
                                                                                      thyroxin; insulin and glucagon; diabetes


                                                    1 week        Homeostasis in      •	 Homeostasis                                               •	 Observe prepared microscope slides of a section         •	 Textbooks
                                                    (4 hours)     Humans                The process of maintaining a constant, optimal internal       through human skin or use a micrograph or model.        •	 Microscope         prepared
                                                                                        environment:                                                  Identify main features.                                    slides
                                                                                      -	 negative feedback: glucose, carbon dioxide; water                                                                    	or
                                                                                         and salts;                                                                                                           	Micrographs




CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
                                                                                      -	 thermoregulation: adaptations of human skin;                                                                         	   or model
                                                                                         sweating, vasodilatation, vasoconstriction.
TERM 3
       1 week        Responding          •		 Plant hormones The general functions of auxins,          •	 Design investigations to show geotropism and              •	 Textbooks
       (4 hours)     to the                  gibberellins, abscisic acid.                                phototropism. Identify the variables and recommend        •	 Suitable equipment:




CAPS
                     Environment:        Weed control by using growth hormones.                          ways to control the variables. Record and interpret the      geotropism and
                     Plants                                                                              results.                                                     phototropism experiments

                                         •		 Geotropism and phototropism                                                                                           •	 If available, a klinostat
                                                                                                                                                                      should be used
                                         Growth regulation by auxins.
                                                                                                                                                                   •	 Seedlings

                                         •		 Plant defence mechanisms
                                         Chemicals, thorns.


       Strand 4: Diversity, Change and Continuity (continued):
       It is necessary to have a firm grasp on the work done earlier in the year on DNA, genetics and heredity in order to understand the concept of change, natural selection and evolution. This
       knowledge strand is expanded on by exploring the mechanisms of evolution and specifically human evolution in Africa. .
       Time                Topic                                  Content                                                  Investigations                                   Resources
       2 weeks       Evolution           •	 Origin of ideas about origins                             •	 Class debate and discussion.                              •	 Textbooks
       (8 hours)     by Natural          Different kinds of evidence: fossil record (link to Grade                                                                 •	 Reference books.
                     Selection           10), modification by descent, biogeography (link to Grade    •	 Demonstrate natural selection through games, e.g.,        •	 Biography of Darwin (if
                                         10), genetics (Grade 12) and other forms of evidence:           camouflage                                                   possible and if learner
                                             -	 difference between hypothesis and theory; and         •	 Research one example of artificial selection. Present        shows interest)
                                             -	 brief overview of history of different theories          findings in a report
                                                of development: Lamarckism, Darwinism, and
                                                Punctuated Equilibrium.
                                         •	 Artificial selection: ONE example of a domesticated
                                            animal and ONE example of a crop species.
                                         •	 Darwin’s theory of evolution by natural selection
                                         •	 Evolution (change) through natural selection (link to
                                            Genetics): depends on variation/gene pool of inherited
                                            characteristics, and the production of more offspring
                                            than is required. Changes in the environment.
                                             Pressure leads to extinction or successful adaption.




61
                                             Continuous and discontinuous variation.
                                                                                                                                                                                                     LIFE SCIENCES GRADES 10-12
TERM 3
                                                    •	 Formation/emergence of new species Speciation;




62
                                                       biological species concept. Interbreeding produces
                                                       viable offspring in a species.
                                                    	 ONE example of speciation due to geographic
                                                      isolation (Galapagos finches, Galapagos tortoises,
                                                      mammals or plants on different landmasses, e.g.,
                                                      baobabs in Africa and Madagascar, proteas in South
                                                      Africa and Australia).


                                                    •	 Mechanisms for reproductive isolation:
                                                       Introduction to some examples:
                                                       -	 breeding at different times of the year;
                                                                                                                    LIFE SCIENCES GRADES 10-12




                                                       -	 species-specific courtship behaviour;
                                                       -	 adaptation to different pollinators (plants);
                                                       -	 prevention of fertilisation;
                                                       -	 infertile offspring in cross-species hybrids.


                                                    •	 Evolution in present times Examples of
                                                       natural selection and evolution, e.g., resistance
                                                       to insecticides in insects, bill and body size of
                                                       Galapagos finches, resistance to antibiotics in
                                                       various bacteria (TB), HIV resistance to anti-
                                                       retrovirals.




CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
TERM 3
       2 weeks      Human       •	 Evidence of common ancestors for living hominids          •	 Poster presentation                                     •	 Textbooks
       (8 hours)    Evolution      including humans: Anatomical differences and              Map out the three major phases in hominid evolution from   •	 Newspaper articles (e.g.,




CAPS
                                   similarities between African apes and humans:             6 mya up to the present:                                      the discovery of Sediba)
                                   -	 Fossil evidence: key features: bipedalism (spine            -	 Ardipithecus (Ethiopia)                            •	 DVDs if possible
                                      and pelvic girdle), brain size, teeth (dentition),
                                                                                                  -	 Australopithecus (East and South Africa)           •	 Maps, pictures and
                                      prognathism and palate shape, cranial and brow
                                                                                                  -	 Homo (various sites)                                  photographs
                                      ridges. The number of fossils that have been
                                      found (it is important to know that thousands of       The map/timeline should show the diagnostic features
                                      fossil fragments have been found).                     and the approximate times that examples of the three
                                                                                             major genera existed. It is not necessary to show the
                                   -	 Genetic evidence: mitochondrial DNA
                                                                                             relationships between genera. (Scientists may interpret
                                   -	 Cultural evidence tool-making.
                                                                                             relationships differently as new evidence is found)
                                                                                             or
                                •	 Out of Africa hypothesis
                                                                                             (see Term 4)
                                	 Evidence African origins for all modern humans:
                                  genetic links, mitochondrial DNA:
                                   -	 Rift valley fossil sites in East Africa (Kenya
                                      and Tanzania) and in Ethiopia. Scientists e.g.,
                                      Johansen and White, the Leaky family
                                   -	 Fossils discovered at these sites: Ardipithecus,
       Total                          Australopithecus, Homo
       7½ weeks                    -	 Fossils sites in South Africa: Fossils discovered at
       (30 hours)                     these sites: Australopithecus and Homo




63
                                                                                                                                                                                       LIFE SCIENCES GRADES 10-12
TERM 3
                                                    Assessment   •	 One formal, recorded test.                                  •	   One practical task.




64
                                                                 •	 Trial examination: 2 x 2½ hours.
                                                                 •	 One project/assignment.
                                                                 •	 Assessment for learning (informal) using a variety
                                                                    of strategies and appropriate forms of assessment
                                                                    in tests, homework exercise, written worksheets,
                                                                    reports, summaries, essays, etc.


                                                                 Refer to the range skills specified in Specific Aims 1 and 3
                                                                 Note that knowledge and understanding of investigations
                                                                 and practical work should also be assessed in written          •	   Refer to the range of skills specified in Specific Aim 2.
                                                                 worksheets, homework, summaries, reports and essays
                                                                                                                                                                                                 LIFE SCIENCES GRADES 10-12




                                                                 and tests. The cognitive skills listed under Specific Aims
                                                                 1 and 3 will also apply to knowledge and understanding
                                                                 of investigations.




CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
TERM 4
       Strand 4: Diversity, Change and Continuity (continued)
       Time              Topic                                    Content                                               Investigations                        Resources




CAPS
       2 weeks      Human             •	 Importance of the Cradle of Humankind:                    •	 Poster presentation: Map out the changes in the
       (8 hours)    Evolution:            -	 Main fossil sites in South Africa, e.g., Taung,          evolution of the Genus: Homo. The map/timeline
                    continued                Sterkfontein, Kromdraai, Swartkrans, Malapa,             should show where the different fossils have been
                                             Plovers Lake, Gladysvale, Makapansgat,                   found and the approximate periods that the selected
                                             Florisbad, Border Cave, Blombos: Evidence and            examples existed. The most significant features of
                                             evolutionary trends from these sites (refer to           each type of fossil (Genus and species) to illustrate
                                             dating of fossils Grade 10). At least two examples       the difference between them.
                                             should be studied to see evolutionary trends.
                                      	   Mention scientists such as Dart, Broome, Tobias,
                                          Brain, Ron Clark, Berger, Keyser and others
                                      •	 Alternatives to evolution
                                          -	 different cultural and religious expalanations for    •	 Research and discussion to share information
                                             the origin and development of life on Earth:             about different explanations: cultural or religious
                                          -	Creationism;                                              explanations.

                                          -	Intelligent Design;
                                          -	Literalism
                                          -	 Theistic evolution
       2 weeks                        •	 Do revision on particularly (but not only) Grade 11
       (8 hours)                         work that will be examined in the NSC exam.




       Total
       4 weeks
       (16 hours)
       Assessment: 2 x 2½ hour exams: Paper 1 and Paper 2 (topics specified)




65
                                                                                                                                                                          LIFE SCIENCES GRADES 10-12
LIFE SCIENCES GRADES 10-12
SECTION 4

ASSESSMENT


4.1	Introduction

Assessment is a continuous planned process of identifying, gathering and interpreting information on learners’
performance, using various forms of assessment. It involves four steps: generating and collecting evidence of
achievement; evaluating this evidence, recording the findings and using this information to understand and thereby
assist the learners’ development in order to improve the process of learning and teaching.

Assessment should be both informal (Assessment for Learning) and formal (Assessment of Learning). In both cases,
regular feedback should be provided to learners to enhance their learning experience.

Assessment is a process that measures individual learners’ attainment of knowledge (content, concepts and skills) in
a subject by collecting, analysing and interpreting the data and information obtained from this process to:

•	    enable the teacher to make reliable judgements about a learner’s progress;

•	    inform learners about their strengths, weaknesses and progress; and

•	    assist teachers, parents and other stakeholders in making decisions about the learning process and the
      progress of the learners.

Assessment should be mapped against the content and intended aims specified for Life Sciences and in informal and
formal assessments it is important to ensure that in the course of the year:

•	    all of the subject content is covered;

•	    the full range of skills is included; and

•	    different forms of assessment are used.


4.2	Informal Assessment or Daily Assessment

Assessment for learning has the purpose of continuously collecting information on learners’ achievement that can
be used to improve their learning.

Informal assessment is daily monitoring of learners’ progress. This is done through observations, discussions,
practical demonstrations, learner-teacher conferences, informal classroom interactions, etc. Informal assessment
may be as simple as stopping during the lesson to observe learners or to discuss how their learning is progressing.
Informal assessment should be used to provide feedback to the learners and to inform planning for teaching, but
it need not be recorded. It should not be seen as separate from learning activities taking place in the classroom.
Learners or teachers can mark these assessment tasks.

Self-assessment and peer assessment actively involve the learners being assessed. This is important as it allows
learners to learn from and reflect on their own performance. The results of the informal daily assessment tasks are
not formally recorded unless the teacher wishes to do so. The results of daily assessment tasks are not taken into
account for promotion or certification purposes.



      66          CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
LIFE SCIENCES GRADES 10-12
Informal, ongoing assessments should be used to structure the acquisition of knowledge and skills and should be a
precursor to formal tasks in the Programme of Assessment.


4.3	Formal Assessment

                Grades                      Formal school-based assessments                    End-of-year examinations
                 R-3                                        100%                                          n/a
                 4-6                                         75%                                         25%
                 7-9                                         40%                                         60%
               10 and 11                    25% including a mid-year examination                         75%
                  12                           25% including mid-year and trial                External examination: 75%
                                                        examinations


All assessment tasks that make up a formal programme of assessment for the year are regarded as formal assessment.
Formal assessment tasks are marked and formally recorded by the teacher for progression and certification purposes.
All formal assessment tasks are subject to moderation to ensure that appropriate standards are maintained.

Formal assessment provides teachers with a systematic way of evaluating how well learners are progressing in
a grade and in a particular subject. Examples of formal assessments include tests, examinations, practical tasks,
projects, oral presentations, demonstrations and performances. Formal assessment tasks form part of a year-long
formal Programme of Assessment in each grade and subject.

The cognitive demands in assessment should be appropriate for the age and developmental level of the learners
in the grade. Assessment in Life Sciences must cater for a range of cognitive levels and abilities of learners. The
assessment tasks should be carefully designed to cover the content of the subject as well as the range of skills and
the cognitive levels that have been identified in the specific aims. The design of assessments should therefore ensure
that a full range of content and skills are assessed within each Grade in the Phase. The specific aims, topics, content
and range of skills in the subject should be used to inform the planning and development of assessments.

Weighting of Cognitive Demands for the Assessment of content in Grades 10, 11 and 12

                                                                                                              Evaluating,
                                                       Understanding          Applying scientific           analysing and
                             Knowing Science
                                                         Science                 knowledge                   synthesising
                                                                                                         scientific knowledge
           %                          40%                    25%                       20%                         15%
 Examples of Useful        •	 State                •	 Explain                •	 Predict                 •	 Select
 Verbs
                           •	 Name                 •	 Compare                •	 Apply                   •	 Differentiate

                           •	 Label                •	 Rearrange              •	 Use knowledge           •	 Analyse

                           •	 List                 •	 Give an example of     •	 Demonstrate             •	 Infer

                           •	 Define               •	 Illustrate             •	 Solve                   •	 Suggest a reason

                           •	 Describe             •	 Calculate              •	 Implement               •	 Discuss

                              and others           •	 Make a                 •	 Judge                   •	 Categorise
                                                      generalisation
                                                                                  and others                and others
                                                       and others




CAPS                                                                                                                     67
LIFE SCIENCES GRADES 10-12
Note: A single, formal class test per term will not necessarily provide the most accurate and reliable evidence of
every learner’s performance. As far as possible, teachers should try to let learners write more than one test per term
in order to get a better picture of their abilities. One formal class test per term is the minimum number that must be
recorded.

The requirements (number and nature of tasks) for Life Sciences are indicated below:


4.4	Assessment Requirements for Life Sciences:


4.4.1	 Grade 10

The programme of assessment is designed to spread formal assessment tasks in all subjects in a school throughout
a term.

GRADE 10

PROGRAMME OF FORMAL ASSESSMENT

                                                                                           END-OF-YEAR INTERNAL
 FORMAL, RECORDED, SCHOOL-BASED ASSESSMENTS
                                                                                             EXAMINATION 75%
                                                                                        Two Written
                                                                                                                  Practical
                                                                                       Examinations
                Content                                    Practical                                             Examination
                                                                                      (2½ Hours + 2½
                                                                                                                   (1 Hour)
                                                                                          Hours)
 •	 Four tests (minimum of 50 marks         A selection of three representative      This exam tests           This exam
    each)                                   practical tasks, which cover the         knowledge on              tests practical
 •	 One midyear examination (2½             range of skills, must be marked and      content, concepts         knowledge and
    hours 150 marks)                        recorded. (The marks allocated for a     and skills across         skills
                                            practical task should range from 20 to   all topics.               This should be set
 •	 One project/assignment (can be
                                            40.)                                     Knowledge of              by each teacher
    done in any term: 100 marks in the
                                            The range of skills is described in      practical work as         taking into account
    fourth term)
                                            Specific Aim 2.                          well as some of           the resources
 •	 Skills are listed under Specific Aims
                                                                                     the skills related        that are available
    1 and 3
                                                                                     to practical work         for practical
                                                                                     must be assessed          examination.
                                                                                     in the written
                                                                                     examination.
                                                                                     80% = 60 marks            20% = 15 marks
                     School-based Assessment (During the Year)                                            75
      Term 1                 Term 2              Term 3                Term 4
 •	 One test            •	 One test         •	 One test           •	 One test
 •	 One selected        •	 One selected     •	 One selected       •	 One project/
    practical task         practical task      practical task        assignment
                        •	 Mid-year
                                            *	Environmental
                           examination         studies:
                                               fieldwork
          25%                 25%                    25%                 25%
                                    Convert to 25%                                                     75%


* This is an example of a project/assignment.


      68             CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
LIFE SCIENCES GRADES 10-12
4.4.2	 Grade 11

PROGRAMME OF FORMAL ASSESSMENT

 FORMAL, RECORDED, SCHOOL-BASED ASSESSMENTS                                          END-OF-YEAR INTERNAL
                                                                                     EXAMINATION 75%
 Content                                    Practical                                Two Written               Practical
                                                                                     Examinations              Examination(1
                                                                                     (2½ hours + 2½            hour)
                                                                                     hours)
 •	 Four tests (minimum of 50 marks         A selection of three representative      These exams               This exam
    each)                                   practical tasks, which cover the         test knowledge            tests practical
 •	 One mid-year examination (2½            range of skills, must be marked and      on content,               knowledge and
    hours, 150 marks)                       recorded. (The marks allocated for a     concepts and              skills
 •	 One project/assignment (can be          practical task should range from 20 to   skills across all         This should be set
    done in any term: 100 marks in Term     40).                                     topics. Knowledge         by each teacher
    4)                                      The range of skills is described in      of practical work         taking into account
 •	 Skills are listed under Specific Aims   Specific Aim 2.                          as well as some of        the resources
    1 and 3                                                                          the skills related        that are available
                                                                                     to practical work         for practical
                                                                                     must be assessed          examination.
                                                                                     in the written
                                                                                     examination.


                                                                                     80% = 60 marks            20% = 15 marks
                     School-based Assessment (during the year)                                            75

 Term 1                 Term 2              Term 3               Term 4
 •	 One test            •	 One test         •	 One test          •	 One test

 •	 One selected        •	 One selected     •	 One selected      •	 One project/
    practical task         practical task      practical task       assignment

                        •	 Mid-year         *	Environmental
                           examination        studies:
                                              fieldwork
        25%                   25%                 25%                   25%
                                                                                                      75%


*This is an example of a project/assignment.




CAPS                                                                                                                     69
LIFE SCIENCES GRADES 10-12
The requirements (number and nature of tasks) for Life Sciences are indicated below:

4.4.3	 Grade 12

PROGRAMME OF FORMAL ASSESSMENT

                                                                                                TRIAL: END-OF-YEAR
 FORMAL, RECORDED, SCHOOL-BASED ASSESSMENTS                                                    INTERNAL EXAMINATION
                                                                                                        50%
                                                                                               Two written examinations
 Content                                                                 Practical
                                                                                                 (2½ hours + 2½ hours)
 •	 Four tests (minimum of 50 marks each)                      A selection of three            These exams test knowledge
                                                               representative practical        of content, concepts and
 •	 *One mid-year examination (2½ hours, 150 marks) or
                                                               tasks, which cover the          skills across all topics.
    control test
                                                               range of skills, must be        Knowledge of practical work
 •	 One trial examination (2 x 2½ hours, 300 marks)            marked and recorded.            as well as some of the skills
 •	 One project/assignment (can be done in any term: 100       (The marks allocated for a      related to practical work
    marks in term 3).                                          practical task should range     must be assessed in the
                                                               from 20 to 40).                 written examination
 •	 Skills are listed under Specific Aims 1 and 3
                                                               The range of skills is
                                                               described in Specific Aim 2.
                        School-based assessment (during the year)
 Term 1                          Term 2                        Term 3 and Term 4
 •	 One test                     •	 One test                   •	 One test
                                                                                               The trial (preliminary)
 •	 One selected practical       •	 One selected practical     •	 One selected practical       examination should be set
    task                            task                          task (will not be included   on the work completed in
                                                                  in year mark)                Terms 1, 2 and 3.
                                 * 	 Mid-year examination or
                                     control test              	project/assignment

                                                               * 	 Environmental studies: 	
                                                                   fieldwork
               33%                             33%                           33%
                                       Convert to 50%                                                      50%


* Note: Schools that are performing well (above an 80% pass rate in the previous year) may elect not to write the
mid-year examination.

Note: The year mark will be converted to 25% and the external examination will count 75% of the final mark.




      70             CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
LIFE SCIENCES GRADES 10-12
4.5	THE END-OF-YEAR EXAMINATIONS:


4.5.1	 Grade 10

The examination will consist of two examination papers of 2½ hours and 150 marks each.

The weighting and assessment of topics in Paper 1 and Paper 2 will be as follows:

Paper 1

                                                                                              Weighting
                             Topic                               Time
                                                                                      %                   Marks
 T1:

 •	 Chemistry of Life                                          2½ weeks               16                   23

 •	 Cells: Basic Units of Life                                 3 weeks                17                   25

 •	 Cell Division: Mitosis                                     2 weeks                12                   18

 •	 Plant and Animal Tissues                                    1 week              5 (50)                  9

 T2:

 •	 Plant and Animal Tissues                                   2 weeks                13                   20

 •	 Plant Organs (Leaf)                                         ½ week                3                     5

 •	 Support and Transport Systems: Plants                      3 weeks                17                   25

 •	 Support Systems: Animals                                   3 weeks              17 (50)                25
 Totals                                                        17 weeks             100%                   150


Paper 2

                                                                                              Weighting
                             Topic                               Time
                                                                                      %                   Marks
 T3:

 •	 Transport Systems in mammals                               3 weeks                20                   30

 •	 Biosphere to Ecosystems                                    6 weeks              40 (60)                60

 T 4:

 •	 Biodiversity and Classification                             1 week                7                    10

 •	 History of Life and Earth                                  5 weeks              33 (40)                50

 Totals                                                        15 weeks             100%                   150


The weighting per topic must serve as a guideline for teachers; slight deviations in respect of the number of marks
allocated to a topic are acceptable. The purpose of providing the weighting is to ensure that all topics are covered
according to approximately the correct weighting.




CAPS                                                                                                            71
LIFE SCIENCES GRADES 10-12
4.5.2	 Grade 11

The examination will consist of two examination papers of 2½ hours and 150 marks each. The weighting and
assessment of topics in Paper 1 and Paper 2 will be as follows:

Paper 1

                                                                                   Weighting
                            Topic                                  Time
                                                                             %                 Marks
 T2

 •	 Energy transformations to sustain Life: Photosynthesis        3 weeks    18                 27

 •	 Animal Nutrition                                              3 weeks    18                 27

 •	 Energy transformation: Respiration                        1½ weeks       10                 15

 T3

 •	 Gas exchange                                              2½ weeks       15                 22

 •	 Excretion in humans                                       2½ weeks       15                 23

 •	 Population Ecology                                            4 weeks    24                 36
 Totals                                                       16½ weeks     100%                150


Paper 2

                                                                                   Weighting
                            Topic                                  Time
                                                                             %                 Marks
 T1
 •	 Biodiversity and classification of micro-organisms            3 weeks    20                 30
 •	 Biodiversity in plants and reproduction                       3 weeks    20                 30
 •	 Biodiversity of animals                                       2 weeks    13                 20
 T4
 •	 Human impact on the environment:                              7 weeks    47                 70
 •	 current crises
 Totals                                                       15 weeks      100%                150




      72           CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
LIFE SCIENCES GRADES 10-12
The weighting per topic must serve as a guideline for teachers; slight deviations in respect of the number of marks
allocated to a topic are acceptable. The purpose of providing the weighting is to ensure that all topics are covered in
approximately the correct weighting.


4.5.3	 Grade 12

The examination will consist of two examination papers of 2½ hours and 150 marks each. The weighting and
assessment of topics in Paper 1 and Paper 2 will be as follows:

Paper 1

                                                                                              Weighting
                           Topic                                   Time
                                                                                        %                 Marks
 T1

 •	 Meiosis                                                       1 week                7                  11

 •	 Reproduction in Vertebrates                                   ½ week                4                   6

 •	 Human Reproduction                                            3 weeks               21                 31

 T2

 •	 Responding to be environment (humans)                         4 weeks               27                 40

 T3

 •	 Human endocrine system                                      1½ weeks                10                 15

 •	 Homeostasis in humans                                         1 week                7                  11

 •	 Responding to the Environment (plants)                        1 week                7                  11

 T4

 •	 Human impact (Grade 11)                                     ‘2½ weeks’              17                 25
 Totals                                                         14½weeks              100%                 150


Paper 2

                                                                                              Weighting
                           Topic                                   Time
                                                                                        %                 Marks
 T1

 •	 DNA: Code of Life                                           2½ weeks                19                 27

 •	 Meiosis                                                       1 week                7                  12

 T2

 •	 Genetics and Inheritance                                      4 weeks               30                 45

 T3

 •	 Evolution through Natural Selection                           2 weeks               15                 23

 T 3/T4

 •	 Human evolution                                               4 weeks               29                 43
 Totals                                                        13½ weeks              100%                 150


The weighting per topic must serve only as a guideline to teachers and examiners and is included to ensure that
all topics are adequately covered in examinations. The number of marks per topic is not expected to be exactly
according to this weighting in the examination papers.


CAPS                                                                                                            73
LIFE SCIENCES GRADES 10-12
4.6	RECORDING AND REPORTING

Recording is a process in which the teacher documents the level of a learner’s performance in a specific assessment
task. It indicates learner progress towards the achievement of knowledge as prescribed in the Curriculum and
Assessment Policy Statement. Records of learner performance should provide evidence of the learner’s conceptual
progression within a grade and her or his readiness to progress or be promoted to the next grade. Records of learner
performance should also be used to verify the progress made by teachers and learners during the teaching and
learning process.

Reporting is a process of communicating learner performance to learners, parents, schools, and other stakeholders.
Learner performance can be reported in a number of ways. These include report cards, parents’ meetings, school
visitation days, parent-teacher conferences, phone calls, letters, class or school newsletters, etc. For all grades,
teachers report learners’ achievements in percentages next to the appropriate subject. The various achievement
levels and their corresponding percentage bands are as shown in the table below.

Note: The seven-point scale should have clear descriptions that give detailed information for each level. Teachers
will record actual marks against the task by suing a record sheet; and report percentages against the subject on the
learners’ report cards.

Codes and Percentages for Reporting in Grades R-12

               Rating code                     Description of competence                        Percentage
                    7                            Outstanding achievement                          80- 100
                    6                            Meritorious achievement                           70 - 79
                    5                            Substantial achievement                           60 - 69
                    4                             Adequate achievement                             50 - 59
                    3                             Moderate achievement                             40 - 49
                    2                            Elementary achievement                            30 - 39
                    1                                  Not achieved                                0 - 29


Schools are required to provide quarterly feedback to parents on the Programme of Assessment using a formal
reporting tool such as a report card. The schedule and the report card should indicate the overall level of a learners’
performance.


4.7	MODERATION OF ASSESSMENT

Moderation refers to the process that ensures that the assessment tasks are fair, valid and reliable. Moderation
should be implemented at school and district level and if necessary also at provincial level. Comprehensive and
appropriate moderation practices must be in place for the quality assurance of all subject assessments.


4.7.1 	Grades 10 and 11

In Grades 10 and 11 Formal School-based Assessment and the Practical Assessment Tasks should be moderated
by the relevant subject specialists at district and, if necessary, provincial levels in consultation with the moderators at
the school. Moderation serves five purposes:




      74            CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
LIFE SCIENCES GRADES 10-12
•	    Firstly, it should ascertain whether the subject-specific content and skills are sufficiently covered.

•	    Secondly, the moderator must ensure that the various levels of cognitive demand are reflected in the
      assessments.

•	    Thirdly, that the assessments and marking are of an acceptable standard and consistency.

•	    Fourthly, to ensure that assessment in different schools are more or less comparable whilst recognising that
      different teachers have different standards.

•	    Finally, to identify areas in which the teacher may need further support and development and to provide such
      necessary support

In Grades 10 and 11 there is no compulsory national moderation. Moderation is therefore an ongoing process and
not a once-off end-of-year event.


4.7.2 	Grade 12

Moderation refers to the process which ensures that the assessment tasks are fair, valid and reliable. Moderation
should be implemented at school, district, provincial and national levels. Comprehensive and appropriate moderation
practices must be in place for the quality assurance of all subject assessments.


4.7.2.1 	Formal Assessment (School-based Assessment - SBA)

In Grade 12, moderation must take place at four levels:

•	    School-based moderation and verification of learner performance

      This is intended to ensure that the assessments meet the requirements in terms of content, cognitive demands
      and skills; that the marking has been consistent and fair and that the marks are a true reflection of learners’
      performance in the assessments. This will enable the school to easily identify problems related to the pacing,
      standard and reliability of assessment and to ensure that appropriate interventions are put in place early. This
      is an ongoing process.

•	    Moderation by the subject advisor

      This is also an ongoing process. Subject advisors should moderate assessments, to ascertain whether:

      -	    Subject-specific content and skills have been covered adequately;

      -	    The prescribed number of assessments have been complied with;

      -	    the appropriate cognitive demands are reflected in the assessments;

      -	    the marking is of an acceptable standard and is consistent;

      -	    the assessments in different schools are comparable whilst recognising that different teachers teach
            and assess differently.




CAPS                                                                                                           75
LIFE SCIENCES GRADES 10-12
Subject advisors should provide teachers with the necessary guidance and support should any shortcomings be
identified. Early identification of shortcomings and early interventions are essential. It is therefore necessary that
moderation at this level should be ongoing and not a once-off end-of-year event.

•	    Moderation by the province

Moderation of SBA at this level is once-off and is related to the quality assurance processes that are necessary
developed jointly by the Department of Basic Education and Umalusi in terms of National Policy.

•	    At a national level

Statistical moderation of learner performance in the School Based Assessment is necessary to ensure comparability
across schools, districts, and provinces.

Note that, in Grade 12, the assessment of Practical work is incorporated into the SBA (per term) and that there is no
practical examination. This is because schools are not all equally resourced and some learners may be disadvantaged
because of this.


4.8	GENERAL

This document should be read in conjunction with:

4.8.1	 National policy pertaining to the programme and promotion requirements of the National Curriculum Statement
      Grades R-12; and

4.8.2	 The policy document, National Protocol for Assessment Grades R-12.




      76           CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
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  • 1. National Curriculum Statement (NCS) Curriculum and Assessment Policy Statement LIFE SCIENCES Further Education and Training Phase Grades 10-12 basic education Department: Basic Education REPUBLIC OF SOUTH AFRICA
  • 2. Curriculum and Assessment Policy Statement Grades 10-12 life sciences CAPS
  • 3. LIFE SCIENCES GRADES 10-12 Department of Basic Education 222 Struben Street Private Bag X895 Pretoria 0001 South Africa Tel: +27 12 357 3000 Fax: +27 12 323 0601 120 Plein Street Private Bag X9023 Cape Town 8000 South Africa Tel: +27 21 465 1701 Fax: +27 21 461 8110 Website: http://www.education.gov.za © 2011 Department of Basic Education Isbn: 978-1-4315-0578-4 Design and Layout by: Ndabase Printing Solution Printed by: Government Printing Works CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
  • 4. LIFE SCIENCES GRADES 10-12 FOREWORD by thE ministER Our national curriculum is the culmination of our efforts over a period of seventeen years to transform the curriculum bequeathed to us by apartheid. From the start of democracy we have built our curriculum on the values that inspired our Constitution (Act 108 of 1996). the Preamble to the Constitution states that the aims of the Constitution are to: • heal the divisions of the past and establish a society based on democratic values, social justice and fundamental human rights; • improve the quality of life of all citizens and free the potential of each person; • lay the foundations for a democratic and open society in which government is based on the will of the people and every citizen is equally protected by law; and • build a united and democratic South Africa able to take its rightful place as a sovereign state in the family of nations. Education and the curriculum have an important role to play in realising these aims. in 1997 we introduced outcomes-based education to overcome the curricular divisions of the past, but the experience of implementation prompted a review in 2000. This led to the first curriculum revision: the Revised National Curriculum Statement Grades R-9 and the National Curriculum Statement Grades 10-12 (2002). Ongoing implementation challenges resulted in another review in 2009 and we revised the Revised National Curriculum Statement (2002) and the National Curriculum Statement Grades 10-12 to produce this document. From 2012 the two national Curriculum statements, for Grades R-9 and Grades 10-12 respectively, are combined in a single document and will simply be known as the National Curriculum Statement Grades R-12. the National Curriculum Statement for Grades R-12 builds on the previous curriculum but also updates it and aims to provide clearer specification of what is to be taught and learnt on a term-by-term basis. the National Curriculum Statement Grades R-12 represents a policy statement for learning and teaching in south African schools and comprises of the following: (a) Curriculum and Assessment Policy statements (CAPs) for all approved subjects listed in this document; (b) National policy pertaining to the programme and promotion requirements of the National Curriculum Statement Grades R-12; and (c) National Protocol for Assessment Grades R-12. MRS ANGIE MOTSHEKGA, MP MINISTER OF BASIC EDUCATION CAPS
  • 5. LIFE SCIENCES GRADES 10-12 CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
  • 6. LIFE SCIENCES GRADES 10-12 CONTENTS Section 1: INTRODUCTION TO THE CURRICULUM AND ASSESSMENT POLICY STATEMENTS... 3 1.1 Background......................................................................................................................................................3 1.2 Overview...........................................................................................................................................................3 1.3 General Aims of the South African Curriculum.............................................................................................4 1.4 Time Allocation.................................................................................................................................................6 1.4.1 Foundation Phase....................................................................................................................................6 1.4.2 Intermediate Phase..................................................................................................................................6 1.4.3 Senior Phase...........................................................................................................................................7 1.4.4 Grades 10-12...........................................................................................................................................7 SECTION 2: INTRODUCTION TO LIFE SCIENCES..........................................................................................8 2.1 What is Life Sciences?....................................................................................................................................8 2.2 Life Sciences as a School Subject.................................................................................................................9 2.3 The Organisation of the Life Sciences Curriculum.......................................................................................9 2.4 The Purpose of Studying Life Sciences.......................................................................................................12 2.5 Specific Aims..................................................................................................................................................13 2.5.1 Specific Aim 1: Knowing Life Sciences..................................................................................................13 2.5.2 Specific Aim 2: Investigating Phenomena in Life Sciences ...................................................................15 2.5.3 Specific Aim 3: Appreciating and Understanding the History, Importance and Applications of Life Sciences in Society................................................................................................................................17 2.5.4 Developing Language Skills: Reading and Writing................................................................................19 2.6 Time ................................................................................................................................................................19 2.7 Resources ......................................................................................................................................................19 SECTION 3: CONTENT............................................................................................................................ 22 3.1 Life Sciences for Grade 10: Content............................................................................................................22 3.2 Life Sciences for Grade 11: Content............................................................................................................39 3.3 Life Sciences for Grade 12: Content............................................................................................................54 SECTION 4: ASSESSMENT IN LIFE SCIENCES ............................................................................................66 4.1 Introduction....................................................................................................................................................66 4.2 Informal and Daily Assessment ...................................................................................................................66 4.3 Formal Assessment.......................................................................................................................................67 CAPS 1
  • 7. LIFE SCIENCES GRADES 10-12 4.4 Assessment Requirements for Life Sciences: Grades 10-12....................................................................68 4.4.1 Grade 10: Programme of Formal Assessment.......................................................................................68 4.4.2 Grade 11: Programme of Formal Assessment.......................................................................................69 4.4.3 Grade 12: Programme of Formal Assessment.......................................................................................70 4.5 End-of-year Examinations.............................................................................................................................71 4.5.1 Grade 10................................................................................................................................................71 4.5.2 Grade 11................................................................................................................................................72 4.5.3 Grade 12................................................................................................................................................73 4.6 Recording and Reporting .............................................................................................................................74 4.7 Moderation of Assessment...........................................................................................................................74 4.7.1 Grades 10 and 11...................................................................................................................................74 4.7.2 Grade 12................................................................................................................................................75 4.7.2.1 Formal assessment (school-based assessment - SBA)......................................................................75 4.8 General ...........................................................................................................................................................76 2 CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
  • 8. LIFE SCIENCES GRADES 10-12 sECTION 1 INTRODUCTION TO THE Curriculum and Assessment Policy StatementS for LIFE SCIENCES gradeS 10-12 1.1 Background The National Curriculum Statement Grades R-12 (NCS) stipulates policy on curriculum and assessment in the schooling sector. To improve implementation, the National Curriculum Statement was amended, with the amendments coming into effect in January 2012. A single comprehensive Curriculum and Assessment Policy document was developed for each subject to replace Subject Statements, Learning Programme Guidelines and Subject Assessment Guidelines in Grades R-12. 1.2 Overview (a) The National Curriculum Statement Grades R-12 (January 2012) represents a policy statement for learning and teaching in South African schools and comprises the following: (i) Curriculum and Assessment Policy Statements for each approved school subject; (ii) The policy document, National policy pertaining to the programme and promotion requirements of the National Curriculum Statement Grades R-12; and (iii) The policy document, National Protocol for Assessment Grades R-12 (January 2012). (b) The National Curriculum Statement Grades R-12 (January 2012) replaces the two current national curricula statements, namely the (i) Revised National Curriculum Statement Grades R-9, Government Gazette No. 23406 of 31 May 2002, and (ii) National Curriculum Statement Grades 10-12 Government Gazettes, No. 25545 of 6 October 2003 and No. 27594 of 17 May 2005. (c) The national curriculum statements contemplated in subparagraphs b(i) and (ii) comprise the following policy documents which will be incrementally repealed by the National Curriculum Statement Grades R-12 (January 2012) during the period 2012-2014: (i) The Learning Area/Subject Statements, Learning Programme Guidelines and Subject Assessment Guidelines for Grades R-9 and Grades 10-12; (ii) The policy document, National Policy on assessment and qualifications for schools in the General Education and Training Band, promulgated in Government Notice No. 124 in Government Gazette No. 29626 of 12 February 2007; (iii) The policy document, the National Senior Certificate: A qualification at Level 4 on the National Qualifications Framework (NQF), promulgated in Government Gazette No.27819 of 20 July 2005; CAPS 3
  • 9. LIFE SCIENCES GRADES 10-12 (iv) The policy document, An addendum to the policy document, the National Senior Certificate: A qualification at Level 4 on the National Qualifications Framework (NQF), regarding learners with special needs, published in Government Gazette, No.29466 of 11 December 2006, is incorporated in the policy document, National policy pertaining to the programme and promotion requirements of the National Curriculum Statement Grades R-12; and (v) The policy document, An addendum to the policy document, the National Senior Certificate: A qualification at Level 4 on the National Qualifications Framework (NQF), regarding the National Protocol for Assessment (Grades R-12), promulgated in Government Notice No.1267 in Government Gazette No. 29467 of 11 December 2006. (d) The policy document, National policy pertaining to the programme and promotion requirements of the National Curriculum Statement Grades R-12, and the sections on the Curriculum and Assessment Policy as contemplated in Chapters 2, 3 and 4 of this document constitute the norms and standards of the National Curriculum Statement Grades R-12. It will therefore, in terms of section 6A of the South African Schools Act, 1996 (Act No. 84 of 1996,) form the basis for the Minister of Basic Education to determine minimum outcomes and standards, as well as the processes and procedures for the assessment of learner achievement to be applicable to public and independent schools. 1.3 General aims of the South African Curriculum (a) The National Curriculum Statement Grades R-12 gives expression to the knowledge, skills and values worth learning in South African schools. This curriculum aims to ensure that children acquire and apply knowledge and skills in ways that are meaningful to their own lives. In this regard, the curriculum promotes knowledge in local contexts, while being sensitive to global imperatives. (b) The National Curriculum Statement Grades R-12 serves the purposes of: • equipping learners, irrespective of their socio-economic background, race, gender, physical ability or intellectual ability, with the knowledge, skills and values necessary for self-fulfilment, and meaningful participation in society as citizens of a free country; • providing access to higher education; • facilitating the transition of learners from education institutions to the workplace; and • providing employers with a sufficient profile of a learner’s competences. (c) The National Curriculum Statement Grades R-12 is based on the following principles: • Social transformation: ensuring that the educational imbalances of the past are redressed, and that equal educational opportunities are provided for all sections of the population; • Active and critical learning: encouraging an active and critical approach to learning, rather than rote and uncritical learning of given truths; • High knowledge and high skills: the minimum standards of knowledge and skills to be achieved at each grade are specified and set high, achievable standards in all subjects; • Progression: content and context of each grade shows progression from simple to complex; 4 CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
  • 10. LIFE SCIENCES GRADES 10-12 • Human rights, inclusivity, environmental and social justice: infusing the principles and practices of social and environmental justice and human rights as defined in the Constitution of the Republic of South Africa. The National Curriculum Statement Grades R-12 is sensitive to issues of diversity such as poverty, inequality, race, gender, language, age, disability and other factors; • Valuing indigenous knowledge systems: acknowledging the rich history and heritage of this country as important contributors to nurturing the values contained in the Constitution; and • Credibility, quality and efficiency: providing an education that is comparable in quality, breadth and depth to those of other countries. (d) The National Curriculum Statement Grades R-12 aims to produce learners that are able to: • identify and solve problems and make decisions using critical and creative thinking; • work effectively as individuals and with others as members of a team; • organise and manage themselves and their activities responsibly and effectively; • collect, analyse, organise and critically evaluate information; • communicate effectively using visual, symbolic and/or language skills in various modes; • use science and technology effectively and critically showing responsibility towards the environment and the health of others; and • demonstrate an understanding of the world as a set of related systems by recognising that problem solving contexts do not exist in isolation. (e) Inclusivity should become a central part of the organisation, planning and teaching at each school. This can only happen if all teachers have a sound understanding of how to recognise and address barriers to learning, and how to plan for diversity. The key to managing inclusivity is ensuring that barriers are identified and addressed by all the relevant support structures within the school community, including teachers, District-Based Support Teams, Institutional-Level Support Teams, parents and Special Schools as Resource Centres. To address barriers in the classroom, teachers should use various curriculum differentiation strategies such as those included in the Department of Basic Education’s Guidelines for Inclusive Teaching and Learning (2010). CAPS 5
  • 11. LIFE SCIENCES GRADES 10-12 1.4 Time Allocation 1.4.1 Foundation Phase (a) The instructional time in the Foundation Phase is as follows: GRADE R GRADES 1-2 GRADE 3 SUBJECT (HOURS) (HOURS) (HOURS) Home Language 10 8/7 8/7 First Additional Language 2/3 3/4 Mathematics 7 7 7 Life Skills 6 6 7 Beginning Knowledge (1) (1) (2) Creative Arts (2) (2) (2) Physical Education (2) (2) (2) Personal and Social Well-being (1) (1) (1) TOTAL 23 23 25 (b) Instructional time for Grades R, 1 and 2 is 23 hours and for Grade 3 is 25 hours. (c) Ten hours are allocated for languages in Grades R-2 and 11 hours in Grade 3. A maximum of 8 hours and a minimum of 7 hours are allocated for Home Language and a minimum of 2 hours and a maximum of 3 hours for Additional Language in Grades 1-2. In Grade 3 a maximum of 8 hours and a minimum of 7 hours are allocated for Home Language and a minimum of 3 hours and a maximum of 4 hours for First Additional Language. (d) In Life Skills Beginning Knowledge is allocated 1 hour in Grades R-2 and 2 hours as indicated by the hours in brackets for Grade 3. 1.4.2 Intermediate Phase (a) The instructional time in the Intermediate Phase is as follows: SUBJECT HOURS Home Language 6 First Additional Language 5 Mathematics 6 Natural Sciences and Technology 3,5 Social Sciences 3 Life Skills 4 Creative Arts (1,5) Physical Education (1) Personal and Social Well-being (1,5) TOTAL 27,5 6 CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
  • 12. LIFE SCIENCES GRADES 10-12 1.4.3 Senior Phase (a) The instructional time in the Senior Phase is as follows: SUBJECT HOURS Home Language 5 First Additional Language 4 Mathematics 4,5 Natural Sciences 3 Social Sciences 3 Technology 2 Economic Management Sciences 2 Life Orientation 2 Creative Arts 2 TOTAL 27,5 1.4.4 Grades 10-12 (a) The instructional time in Grades 10-12 is as follows: Subject Time allocation per week (hours) Home Language 4.5 First Additional Language 4.5 Mathematics 4.5 Life Orientation 2 A minimum of any three subjects selected from Group B Annexure 12 (3x4h) B, Tables B1-B8 of the policy document, National policy pertaining to the programme and promotion requirements of the National Curriculum Statement Grades R-12, subject to the provisos stipulated in paragraph 28 of the said policy document. TOTAL 27,5 The allocated time per week may be utilised only for the minimum required NCS subjects as specified above, and may not be used for any additional subjects added to the list of minimum subjects. Should a learner wish to offer additional subjects, additional time must be allocated for the offering of these subjects. CAPS 7
  • 13. LIFE SCIENCES GRADES 10-12 SECTION 2 APPROACHING LIFE SCIENCES 2.1 What is Life Sciences? ‘Life Sciences’ is the scientific study of living things from molecular level to their interactions with one another and their environments. To be accepted as a science, it is necessary to use certain methods for broadening existing knowledge, or discovering new things. These methods must lend themselves to replication and a systematic approach to scientific inquiry. The methods include formulating hypotheses and carrying out investigations and experiments as objectively as possible to test these hypotheses. Repeated investigations are carried out and adapted. The methods and results are analysed, evaluated and debated before the community of scientists accepts them as valid. Knowledge production in science is an ongoing endeavour that usually happens gradually but, occasionally, knowledge and insights take a leap forward as new knowledge, or a new theory, replaces what was previously accepted. As with all knowledge, scientific knowledge changes over time as scientists improve their knowledge and understanding and as people change their views of the world around them. Scientific investigations are mostly about things that are poorly understood or not understood at all. Scientists are frequently involved in debates and disagreements. As more people take on such investigations, they tend to reach consensus about the ways in which the world works. The science theory that is taught in schools has been tested and is generally accepted. A good teacher will inform learners of debates and arguments among the scientists who were the first to investigate a phenomenon. Scientists continue to explore the unknown. They tackle questions to which no-one has definite answers, such as: ‘Why is the climate changing?’; ‘What is causing the universe to expand?’; ‘What causes the Earth’s magnetic field to change?’; and ‘What, exactly, is the human mind?’. No one knows for sure By studying and learning about Life Sciences, learners will develop: • their knowledge of key biological concepts, processes, systems and theories; • an ability to critically evaluate and debate scientific issues and processes; • greater awareness of the ways in which biotechnology and knowledge of Life Sciences have benefited humankind; • an understanding of the ways in which humans have impacted negatively on the environment and organisms living in it; • a deep appreciation of the unique diversity of past and present biomes in Southern Africa and the importance of conservation; • an awareness of what it means to be a responsible citizen in terms of the environment and life-style choices that they make; • an awareness of South African scientists’ contributions; • scientific skills and ways of thinking scientifically that enable them to see the flaws in pseudo-science in popular media; and 8 CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
  • 14. LIFE SCIENCES GRADES 10-12 • a level of academic and scientific literacy that enables them to read, talk about, write and think about biological processes, concepts and investigations. 2.2 Life Sciences as a School Subject Life Sciences is the study of life at various levels of organisation and comprises a variety of sub-disciplines, or specialisations, such as: • Biochemistry; • Biotechnology; • Microbiology; • Genetics; • Zoology; • Botany; • Entomology; • Physiology (plant and animal); • Anatomy (plant and animal); • Morphology (plant and animal); • Taxonomy (plant and animal); • Environmental Studies; and • Sociobiology (animal behaviour). At school level, all of these sub-disciplines are introduced, to varying degrees, to provide a broad overview of the subject, Life Sciences. The three main reasons for taking Life Sciences are: • to provide useful knowledge and skills that are needed in everyday life • to expose learners to the scope of biological studies to stimulate interest in and create awareness of possible specialisations; and • to provide a sufficient background for further studies in one or more of the biological sub-disciplines. 2.3 The Organisation of the Life Sciences Curriculum The Life Sciences content framework is organised according to four ‘knowledge strands’. Knowledge strands are developed progressively over the three years of FET. These knowledge strands are: • Knowledge Strand 1: Life at the Molecular, Cellular and Tissue Level; • Knowledge Strand 2:Life Processes in Plants and Animals CAPS 9
  • 15. LIFE SCIENCES GRADES 10-12 • Knowledge Strand 3: Environmental Studies; • Knowledge Strand 4: Diversity, Change and Continuity. These Knowledge Strands and the topics within each knowledge strand should not be studied separately or independently. The Knowledge Strands do not need to be taught in the same sequence each year, nor do all four Knowledge Strands have to be covered in each year. This categorisation is simply a tool for organising the subject content and they are also not weighted equally. When teaching Life Sciences, it is very important to help learners to recognise the links between related topics so that they acquire a thorough understanding of the nature and inter- connectedness of life. These links must also be made across grades. Life Sciences: Concept and Content Progression Life at molecular, Life processes in plants Diversity, change and Strands Environmental studies cellular, and tissue level and animals continuity • Chemistry of life • Support and transport • Biodiversity and • Biosphere to systems in plants classification ecosystems - Inorganic compounds • Support systems in • History of life on Earth animals - Organic Grade compounds • Transport system in 10 mammals • Cell - unit of life • Cell division (mitosis) • Plant and animal tissues • Energy • Biodiversity - • Population ecology transformations classification of • Human impact on to support life: microorganisms environment: current photosynthesis • Biodiversity - plants crises • Animal nutrition Grade • Reproduction - plants 11 • Energy • Biodiversity - animals transformations: respiration • Gas exchange • Excretion • DNA code of Life • Reproduction in • Darwinism and • Human impact on vertebrates Natural Selection environment: current • RNA and protein crises Grade 11 synthesis • Human reproduction • Human evolution Grade • Meiosis • Nervous system 12 • Senses • Endocrine system • Homeostasis The content framework focuses on ideas, skills and concepts as well as connections between them, rather than on listing the facts and procedures that need to be learned. It also does not prescribe particular instructional strategies or methodologies. Instead, educators have the freedom to expand concepts and to design and organise learning experiences according to their local circumstances, including the availability of resources. 10 CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
  • 16. LIFE SCIENCES GRADES 10-12 In Grade 10, all four Knowledge Strands are addressed and serve to introduce learners to the four strands. The recommended Grade 10 teaching sequence for the four Knowledge Strands is: 1. Life at Molecular, Cellular and Tissue level (Molecules to organs) 2. Life Processes in Plants and Animals (Processes that sustain life) 3. Environmental Studies (Biosphere to Ecosystems) 4. Diversity, Change and Continuity (History of Life on Earth) The rationale for this order In Grade 10 is that some areas of South Africa are best suited for an environmental study during early spring and also because seasonal comparisons in a chosen ecosystem are required where possible. Some teachers may elect to deal with the Environmental Study at the beginning of the year. However it is important to retain the sequence of Knowledge Strand 1 before Knowledge Strand 2 and Knowledge Strand 3 before Knowledge Strand 4. Decisions regarding the sequence (starting the year with Knowledge Strands 1 and 2 or starting the year with Knowledge Strands 3 and 4) must be made by teachers. The first section in Grade 10, called “Subject Orientation”, is designed to prepare learners for the FET phase, and is intended to: • connect what learners learned in the GET (Natural Sciences) with what they will be learning in the FET (Life Sciences). The Life Sciences subject builds on knowledge and skills acquired from the Life Sciences knowledge areas in GET. • describe how knowledge is built/constructed in science, and introduces the scientific approach that both teachers and learners are required to use when teaching and learning Life Sciences. • introduce learners to some basic principles related to science. • familiarise learners with the range of skills that they will need to develop. The orientation should be done in the first lessons as an introduction but is not part of the assessable curriculum although the principles and skills will be assessed in the context of specific content during the year. Learners will have been exposed to similar orientations at the start of the Senior Phase (Grade 7) and at the start of High School (Grade 8). The orientation on Grade 10 should then simply remind learners of what is expected of them and expand on some of the aspects. In Grade 11, three of the four Knowledge Strands are addressed and serve to ensure progression. The content described in Life at Molecular, Cellular and Tissue level in Grade 10 is used to understand Life Processes in Plant and Animals in Grade 11 but it is not taught as a separate strand in Grade 11. The recommended Grade 11 teaching sequence for the three Knowledge Strands is: 1. Diversity, Change and Continuity (Microorganisms, Plants and Animals) 2. Life Processes in Plants and Animals (Processes that sustain life) 3. Environmental Studies (Population Ecology and Human Impact) CAPS 11
  • 17. LIFE SCIENCES GRADES 10-12 In Grade 12, three of the four Knowledge Strands are addressed and serve to ensure progression. The content described in Environmental Studies: Human Impacts (Current Crises) is dealt with in Grade 11 in order to lessen the pressure in Grade 12 but this Knowledge Strand will be examined in the National Senior Certificate examination at the end of Grade 12. The recommended Grade 12 teaching sequence for the four Knowledge Strands is: 1. Life at Molecular, Cellular and Tissue level (DNA and protein synthesis) 2. Life Processes in Plants and Animals (Processes that sustain life) 3. Diversity, Change and Continuity (Darwinsim and Human Evolution) 4. Environmental Studies (Human Impact, taught and assessed in Grade 11) The identified range of cognitive and practical skills must be taught, and assessed, in an integrated way in the context provided by the topics in the four Knowledge Strands in each year in the FET band. 2.4 The Purpose of Studying Life Sciences • The development of Scientific Knowledge and Understanding Scientific knowledge and understanding can be used to answer questions about the nature of the living world around us. It can prepare learners for economic activity and self-expression and it lays the basis of further studies in science and prepares learners for active participation in a democratic society that values human rights and promotes acting responsibly towards the environment. • The Development of Science Process Skills (Scientific Investigations) The teaching and learning of science involves the development of a range of process skills that may be used in everyday life, in the community and in the workplace. Learners can gain these skills in an environment that supports creativity, responsibility and growing confidence. Learners develop the ability to think objectively and use different types of reasoning while they use process skills to investigate, reflect, synthesise and communicate. • The Development of an Understanding of Science’s Roles in society Both science and technology have made a major impact, both positive and negative, on our world. A careful selection of scientific content and the use of a variety of methods to teach and learn science should promote the understanding of science as a human activity as well as the history of science and the relationship between Life Sciences and other subjects. It also helps learners to understand the contribution of science to social justice and societal development as well as the need for using scientific knowledge responsibly in the interest of ourselves, society and the environment. Moreover, understanding science also helps us to understand the consequences of decisions that involve ethical issues. 12 CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
  • 18. LIFE SCIENCES GRADES 10-12 2.5 Specific Aims There are three broad subject-specific aims in Life Sciences which relate to the purposes of learning science. These are: 1. Specific Aim 1, which relates to knowing the subject content (‘theory’); 2. Specific Aim 2, which relates to doing science or practical work and investigations; and 3. Specific Aim 3, which relates to understanding the applications of Life Sciences in everyday life, as well as understanding the history of scientific discoveries and the relationship between indigenous knowledge and science. WHAT DO THE THREE AIMS MEAN AND HOW DO THEY RELATE TO ASSESSMENT? 2.5.1 Specific Aim 1: Knowing Life Sciences (Life Sciences concepts, processes, phenomena, mechanisms, principles, theories, laws, models, etcetera). Specific Aim 1 involves knowing, understanding, and making meaning of sciences, thereby enabling learners to make many connections between the ideas and concepts. Making such connections makes it possible for learners to apply their knowledge in new and unfamiliar contexts. The process of acquiring a deep understanding of science is about more than just knowing a lot of facts. The scope of knowledge that learners should acquire includes knowledge of the process skills related to carrying out investigations. The following cognitive (thinking) skills comprise the range of skills that all learners should develop by working through the curriculum in a school year. These skills indicate what should be assessed at the appropriate grade level in a variety of different kinds of assessments. Note that not every skill is assessed in every assessment, but that teachers must ensure that, by the end of the year, the assessments provide evidence that the range of different skills have been assessed for each learner. 2.5.1.1 Acquire Knowledge In the process of acquiring knowledge learners must: • access information from a variety of sources (teachers, reference books, textbooks, internet, experts, peers, parents, etc.); • select key ideas; • recall facts; and • describe concepts, processes, phenomena, mechanisms, principles, theories, laws and models in Life Sciences. Assessment In order to assess these competences (or cognitive skills), teachers should use the following verbs in the tasks or assessments that they set: state, name, label, list, define, describe and any other verbs that indicate that learners’ knowledge of the subject is being assessed. CAPS 13
  • 19. LIFE SCIENCES GRADES 10-12 2.5.1.2 Understand and Make Connections Between Ideas and Concepts to Make Meaning of Life Sciences In the process of making meaning and achieving understanding learners must: • build a conceptual framework of science ideas; • organise or reorganise knowledge to derive new meaning; • write summaries; • develop flow charts, diagrams and mind maps; and • recognise patterns and trends. Assessment In order to assess these competencies (cognitive skills), teachers should use the following verbs in the tasks or assessments they set: explain, compare, rearrange, give an example of, illustrate, calculate, interpret, suggest a reason, make a generalisation, interpret information or data, predict, select, differentiate or any other suitable verbs that indicate that learners’ understanding of the subject is being assessed. 2.5.1.3 Apply Knowledge on Life Sciences in New and Unfamiliar Contexts Learners must be able to: • use information in a new way; and • apply knowledge to new and unfamiliar contexts. Assessment In order to assess these competencies (cognitive skills), teachers should use the following verbs in the tasks or assessments that they set: demonstrate, interpret, predict, compare, differentiate, illustrate, solve and select as well as any other appropriate verbs that assess a learner’s ability to apply knowledge. The key is that learners must be able to apply knowledge in a context or situation for which they have not yet acquired specific knowledge, or use the knowledge in a new way. 2.5.1.4 Analyse, Evaluate and Synthesise Scientific Knowledge, Concepts and Ideas In the process of learning science, learners must be able to: • analyse information/data; • recognise relationships between existing knowledge and new ideas; • critically evaluate scientific information; • identify assumptions; and • categorise information. 14 CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
  • 20. LIFE SCIENCES GRADES 10-12 Assessment In order to assess these competencies (cognitive skills), teachers should use the following verbs in the tasks or assessments that they set: appraise, argue, judge, select, evaluate, defend (a point of view), compare, contrast, criticise (an argument or assumption) differentiate, distinguish, discuss or any other suitable verbs that indicate that analysis, evaluation and synthesis are being assessed. 2.5.2 Specific Aim 2: Investigating Phenomena in Life Sciences Learners must be able to plan and carry out investigations as well as solve problems that require some practical ability. This ability is underpinned by an attitude of curiosity and an interest in wanting to find out how the natural world and living things in it work. The following range of skills relates to doing practical work in Life Sciences. All seven skills will not apply to every activity equally. The skills are aligned to what learners would be doing in the normal course of carrying out an investigation. Teachers must select those skills that apply to and can be assessed in the context of specific activities. By the end of the Grade 10 year, all seven skills must have been assessed at a grade-appropriate level. Note: While doing practical investigations involves a specific range of skills, learners’ knowledge on and understanding of science can, and should, be assessed within the context of the cognitive domains of Specific Aim 1. Learners must be able to: 2.5.2.1 Follow Instructions This is essential, especially in the lower grades and in large classes. Teachers cannot expect all learners to use unfamiliar equipment and to do so independently without giving them a clear set of instructions to follow. The amount of assistance required would indicate the level of performance in this regard. Adherence to safety rules should be part of this. 2.5.2.2 Handle Equipment or Apparatus This should include having knowledge of the apparatus, that is, being able to name it and knowing what it is used for. The learner should be able to use different kinds of equipment. ‘Handling equipment’ is a generic skill and applies to any equipment used for many different kinds of investigations. Handling improvised equipment requires the same skills as would be required for handling standard laboratory equipment. The emphasis is on using equipment appropriately and safely (and not on only memorising the names of apparatus). 2.5.2.3 Make Observations A variety of observations are possible and observations can be recorded in different ways, such as: • drawings; • descriptions; • grouping of materials or examples based on observable similarities and/or differences; • measurements; • comparing materials before and after treatment; CAPS 15
  • 21. LIFE SCIENCES GRADES 10-12 • observing results of an experimental investigation which will involve recording information in an appropriate way; and • counting. 2.5.2.4 Record Information or Data This should include recording observations or information as drawings, descriptions, in simple table format, as simple graphs, etc. The skill of ‘recording’ is transferable across a range of different scientific activities. 2.5.2.5 Measure Learners should know what to measure, how to measure it and have a sense of the degree of accuracy that is required. A variety of things could be measured including (but not limited to) length, volume, temperature, weight or mass and numbers (counting). Measuring is a way of quantifying observations and in this process learners should learn to make estimations. 2.5.2.6 Interpret Learners should be able to convert information from one form, in which it was recorded, into another, for instance converting a table into an appropriate graph. Learners should be able to perform appropriate simple calculations, to analyse and extract information from tables and graphs, apply knowledge of theory to practical situations, recognise patterns and/or trends, appreciate the limitations of experimental procedures as well as make deductions based on evidence. 2.5.2.7 Design/Plan Investigations or Experiments Not all investigations are based on the ‘classic’ dependent-independent variables and controls. For example, an investigation could involve observing soil profiles or counting populations. Designing an investigation is a different process to planning an investigation. In the design process options need to be considered in terms of the hypothesis and variables may have to be identified. Skills include: • identifying a problem; • hypothesising; • selecting apparatus or equipment and/or materials; • identifying variables; • suggesting ways of controlling variables; • planning an experiment; • suggesting ways of recording results; and • understanding the need for replication or verification. In Grades 10, 11 and 12, learners must be able to plan and/or design a simple investigation or experiment. 16 CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
  • 22. LIFE SCIENCES GRADES 10-12 Note: Skills 2.5.2.1-2.5.2.6 (following instructions, handling equipment, making observations, recording information, measuring and interpreting information) are all required, in one form or another, to carry out an experiment or investigation. By separating seven different kinds of skills (2.5.2.1-2.5.2.7), these skills can apply to the variety of practical work that is appropriate for a particular grade in Life Sciences, including simple investigations or experiments. This approach makes it easier to assess learners in a range of different circumstances and it enables a teacher to judge a learner’s ability to do science. The skills are based on what learners will be doing actions during the normal course of doing practical work. However, there are some circumstances in which only some of these skills would apply and not every skill can be assessed in every practical task. 2.5.3 Specific Aim 3: Appreciating and Understanding the History, Importance and Applications of Life Sciences in Society The third aim of Life Sciences is to enable learners to understand that school science can be relevant to their lives outside of the school and that it enriches their lives. Learners must be exposed to the history of science and indigenous knowledge systems from other times and other cultures. Scientific knowledge and understanding have been developed over time by people who were curious and who persevered with their quest for knowledge. Our present understanding of science will change and improve as modern scientists make new discoveries. The skills that can be developed in the process of achieving Specific Aim 3 are cognitive rather than practical. These are the same cognitive skills as the ones identified for Specific Aim1. Since the knowledge that will be acquired in respect of Specific Aim 3 always relates to specific subject content, the content provides the context for learning about various aspects of science in society. Science should therefore be taught in an integrated way in order to both enhance the subject and to clarify the relationship between the subject and society i.e. indigenous knowledge systems that relate to a specific topic, related history of scientific discoveries and the applications of science in everyday life. 2.5.3.1 Understanding the History and Relevance of Some Scientific Discoveries The subject content provides the context for learning about the history of scientific discoveries and their relevance for society. These aspects, the history and relevance, should be linked to and taught in conjunction with the topics and content that are related to a particular discovery or a particular scientist. 2.5.3.2 The Relationship Between Indigenous knowledge and Life Sciences All knowledge stems from views on how the world works. One of the differences between modern science (and technology) and traditional, indigenous knowledge systems is that they have their origins in different world views. Learners should understand the different cultural contexts in which indigenous knowledge systems were developed. The examples of indigenous knowledge that are selected for study should, as far as possible, reflect different South African cultural groups. They should also link directly to specific areas in the Life Sciences subject content. 2.5.3.3 The Value and Application of Life Sciences Knowledge in the Industry in Respect of Career Opportunities and in Everyday Life Knowledge of Life Sciences is applied in and relevant to various aspects of society. Examples should be relevant to the subject content that learners are dealing with at a particular time. There are career opportunities in the field of socio-biology and animal behaviour, plant pathology, game management, environmental impact studies, preservation CAPS 17
  • 23. LIFE SCIENCES GRADES 10-12 of biodiversity, palaeontology, palaeoanthropology, agriculture, horticulture, environmental law, science journalism, biotechnology, genetic engineering, and many others. Moreover, although learners should be made aware of career choices, it is not necessary to discuss or teach these in great detail. Skills Whilst the kind of knowledge is different for Specific Aims 1 and 3, the content should be taught in an integrated way in order for learners to understand the history, relevance and applications of science more easily. Importantly, the skills that must be developed and assessed for Specific Aim 3 are the same as those of Specific Aim 1 (under 2.5). Learners must be able to: • access information; • select key ideas; Specific Aim 1.1 • recall information; • describe knowledge of natural sciences; • build a conceptual framework; • organise or reorganise knowledge; • write summaries; Specific Aim 1.2 • develop flow charts and mind maps; • recognise patterns and trends; • apply knowledge in new contexts; • use knowledge in a new way; Aim 1.3 Specific • analyse information/data; • critically evaluate scientific information; • recognise relationships between existing; knowledge and new ideas; Aim 1.4 Specific • identify assumptions; and • categorise information. The three aims are aligned with the three learning outcomes with which teachers are familiar. Within each of these aims, specific skills or competences have been identified. It is not advisable to try to assess each of the skills separately, nor is it possible to report on individual skills separately. However, well designed assessments must show evidence that, by the end of the year, all of the skills have been assessed at a grade-appropriate level. There must be a clear link between the aims and the outcomes of learning. The processes of teaching, learning and assessment will provide the links between the specific aims and the achievement of the outcomes. 18 CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
  • 24. LIFE SCIENCES GRADES 10-12 2.5.4 Developing Language Skills: Reading and Writing Teachers of Life Sciences should be aware that they are also engaged in teaching language across the curriculum. This is particularly important for learners for whom the Language of Learning and Teaching (LoLT) is not their home language. It is important to provide learners with opportunities to develop and improve their language skills in the context of learning Life Sciences. It will therefore be critical to afford learners opportunities to read scientific texts and to write reports, paragraphs and short essays as part of the assessment, especially in (but not limited to) the informal assessments for learning. 2.6 Time The time allocation for Life Sciences is 4 hours per week in Grades 10 to 12. The curriculum for Grade 10 has been designed to be completed within 32 weeks out of 40 weeks in the school year. This leaves 8 weeks in the year for examinations, tests and disruptions due to other school activities. The curriculum for Grade 11 has been designed to be completed within 32 weeks out of 40 weeks in the school year. This leaves 8 weeks in the year for examinations, tests and disruptions due to other school activities. The curriculum for Grade 12 has been designed to be completed within 27½ weeks out of 40 weeks in the school year. This leaves 12½ weeks in the year for examinations, tests and disruptions due to other school activities. In Grades 10, 11 and 12 the time allocated for the teaching of the content includes the practical tasks and investigations. These are an integral part of the teaching and learning process. 2.7 Resources The resources needed for teaching Life Sciences are listed next to each topic in order to assist teachers with planning and preparation. Every learner must have his or her own textbook. Teachers should ensure that a system is in place for recovering textbooks at the end of every year. Schools must provide secure storage space where textbooks and other equipment can be stored safely. Ideally, every learner should have access to sufficient workspace and equipment to carry out investigations. For safety reasons, no more than three learners may share space and equipment in instances where space and equipment are limited due to large classes. With regard to equipment, schools must make every effort to ensure that the essential equipment is provided. While it is acknowledged that it is not ideal to use improvised equipment, teachers should remember that it is more important for learners to have the experience of carrying out a variety of investigations than to depend on the availability of standard laboratory equipment. If equipment is limited, teachers should be encouraged to improvise. The same skills can be developed using improvised equipment. Moreover, if there are no alternatives, it is more effective for teachers to demonstrate an investigation than to not do investigations at all due to a lack of equipment. Secure storage for equipment and chemicals must be provided by the school. Teachers should ensure that learners are familiar with rules regarding the safe use of equipment and chemicals. The Life Sciences classroom or laboratory should be equipped with charts, Bunsen burners or spirit lamps, hand lenses, bioviewers and relevant biostrips, microscopes, a set of prepared slides, glass slides and cover slips, reference CAPS 19
  • 25. LIFE SCIENCES GRADES 10-12 books, blades or scalpels, models, field guides, identification keys, thermometers, glass beakers, test tubes and chemicals, and, if at all possible, access to appropriate DVDs and a DVD player. Fresh plant material can be obtained from the surroundings and teachers should ensure that appropriate plants (e.g., Impatiens) are planted on the school grounds. Fresh animal material can very often be obtained at reasonable prices from local butchers. Teachers must be qualified to teach the subject and must familiarise themselves with the equipment and how it is used. 20 CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
  • 26. LIFE SCIENCES GRADES 10-12 SECTION 3 3.1 LIFE SCIENCES FOR GRADE 10: CONTENT The first part of the curriculum in Grade 10, called ‘Subject Orientation’, is included to prepare learners for Life Sciences in the FET band. Its purpose is to: • familiarise learners with the way in which the teacher will organise learning activities; • familiarise learners with the behaviour that will be required and rules of safety; • connect what learners have learnt in the Senior Phase with what they will learn and the range of skills that they must develop in FET; • describe how knowledge is constructed in Life Sciences and to confirm a scientific approach that both teachers and learners will be required to use when teaching and learning Life Sciences; and • introduce learners to some basic principles related to Life Sciences CAPS 21
  • 27. GRADE 10 TERM 1 22 Time Orientation to Life Sciences: Subject Orientation ½ week Establish links between Natural Sciences (GET) and Life Sciences (FET). Define life, its scope, and its continuity. Life on Earth is dynamic, with homeostasis maintaining (2 hours) balance at every level of organisation. Life is characterised by changes over billions of years. Living systems exhibit levels of organisation from molecules to biomes. The nature of science: science involves contested knowledge, and non-dogmatic inferences based on evidence and peer review. How Science Works: Science is based on: • fundamental knowledge built on scientific evidence and verified findings (articles that are published in journals or at conferences: peer review); • observing; • investigating; • making measurements and understanding the importance of scaling; • collecting and presenting data in the form of drawings, written descriptions, tables and graphs; LIFE SCIENCES GRADES 10-12 • understanding the limitations of scientific evidence; • identifying patterns and relationships in data; • communicating findings; and • taking societal aspects of scientific evidence into account. Scientific skills involve: • importance of biological principles such as relationship between surface area and volume/size, the relationship between structure and function • biological drawings: principles that apply • translating 3 dimensional objects or specimens into 2 dimensional drawings and photographs and interpreting 2 dimensional drawings and photographs: transverse and longitudinal sections • general introduction to the range of skills listed under the Specific Aims that must be developed • introduction to graphs: different kinds of graphs and when to use them; interpreting graphs. • calculating CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS) Organisation of learning and rules include: • using equipment and other resources; • understanding procedures and how to safely use apparatus in laboratories and classrooms; • working in groups; • understanding assessment requirements; and • a very brief mention of careers and subject combinations for entrance to higher education. Note: This introduction is not assessable. However, the relevant aspects must be incorporated into in the context of the specific content where they apply, and will then be assessed.
  • 28. TERM 1 Strand 1: Life at the Molecular, Cellular and Tissue Level All living organisms are made of atoms which combine to form molecules. In turn, these molecules make up the basic units of life i.e. cells. Plant and animal cells have a complex CAPS organisation which enables them to carry out the basic processes of life, i.e. movement (movement in and around the cells and some cells move), nutrition (cells produce food or obtain food from elsewhere), respiration, excretion, growth, reproduction and responding to stimuli. Cells are specialised and form tissues which perform particular functions. The tissues are arranged into organs which are also specialised to carry out particular functions. This strand introduces learners to life at the molecular, cellular, tissue and organ level (links to Grade 9). Time Topic Content Investigations Resources 2½ weeks The Chemistry Molecules For Life Optional: • Textbooks (10 hours) of Life Organic molecules are made up of C, H, and O, and • Construct models of simple and more complex • Charts some contain other elements, such as N and P. Cells are molecules using beads or plasticine. • Equipment made up of proteins, carbohydrates, lipids, nucleic acids • Test tubes and vitamins. (Only basic structural detail required.) Inorganic Compounds • The main functions of: - water: 2 H and 1 O; - minerals: e.g., Na, K, Ca, P, Fe, I, nitrates, • Analyse nutritional content indicated on food • A selection of phosphates; macro and micro elements; main packaging: vitamins, minerals and other nutritional food packaging showing functions and deficiency diseases (link to nutrition content. nutritional content and Grade 9). • The need for fertilisers in over utilised soils, e.g., where crops are grown and regularly harvested, fertilizers are washed away into rivers, and eutrophication can take place (link to ecology). 23 LIFE SCIENCES GRADES 10-12
  • 29. TERM 1 Organic Compounds Essential: • Chemicals 24 • carbohydrates - monosaccharaides (single sugars), • Food tests for starch, glucose, lipids and proteins. • Bunsen burners e.g., glucose and fructose; disaccharides, (double • Investigate the working of a ‘biological’ washing • Thermometers sugars), e.g., sucrose and maltose; polysaccharides powder (containing enzymes). • Washing powder (many sugars), e.g., starch, cellulose and glycogen; • lipids (fats and oils) - 1 glycerol and 3 fatty acids: OR unsaturated and saturated fats; cholesterol in foods; and heart disease (link to Grade 9); • Hydrogen Peroxide and chicken liver to demonstrate • H2O2 and chicken liver • proteins - amino acids (C,H, O and N and some the effect of enzymes. or have P, S, Fe) - are sensitive to temperature and pH: loss of structure and function; the role of enzymes in breaking down/synthesising molecules; the influence OR of temperature and pH on enzyme action; the Lock LIFE SCIENCES GRADES 10-12 and Key Model of how enzymes work; enzymes in • Fresh pineapple juice and solid egg white in a plastic • Pineapple juice, egg everyday life (for instance using washing powders); drinking straw. white and plastic drinking • Mention of nucleic acids - DNA and RNA - consisting straws AND of C, H, O, N and P (no details of structure required); and • vitamins - e.g., A, one of the B vitamins, C, D and E. • Observe, measure and record results of the (Simple diagrams to represent molecules. Review briefly experiment done at different temperatures. why these substances are needed in plants and animals i.e. build on prior knowledge. Do not give detail of structure or function - functions will be dealt with in later • Compare the Recommended Daily Allowance (RDA) sections where appropriate. This is a brief introduction to with usual diet of individual learners. Draw a pie chart the molecular make-up of organisms.) of the food types and discuss implications of the CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS) usual diet of learners.
  • 30. TERM 1 3 weeks Cells: The Molecular Make-Up • Textbooks (12 hours) Basic Units of Cells are mostly made up of proteins, carbohydrates, • Charts CAPS Life lipids, nucleic acids and water. • Micrographs • Microscope slides Brief overview of the history of microscopy: from lens • Explain and demonstrate how a light microscope • Chemicals and light microscopes and to electron microscopes. How works. • Electron micrographs (in these instruments enabled people to see cells and then Use a light microscope to observe and record (draw) text books) structures within cells which led to cell theory. the structure of a: • Transparent rulers (Briefly revise Grade 9 work on the cell.) - plant cell (wet mount of onion epidermis) and an • Light microscopes Cell Structure and Function: The Roles of Organelles - animal cell (cheek cells) • Bioviewers and biostrips • cell wall - support structure in plant cells only; If microscopes are not available, use micrographs. • cell membrane - fluid mosaic model, boundaries and - Calculate magnification of drawing by measuring transport: movement across membranes: diffusion, the field of view under a microscope. osmosis and active transport; OR • nucleus, chromatin material, nuclear membrane, nucleopores, nucleolus: the control centre, heredity; • Calculate the size of specimen on a micrograph using the scale line provided. • cytoplasm - storage and circulation of materials; • mitochondria - release energy during cell respiration; • ribosomes - protein synthesis; • endoplasmic reticulum (rough and smooth) - transport systems; • Golgi body - assembles secretions; • plastids - production and storage of food and pigments; and • vacuole, lysosomes, vesicles - storage, digestion and • Investigate diffusion. • Beakers osmoregulation. • Investigate osmosis. • Salt, Relate structure and location of organelles to their • Potatoes or eggs functions. (This is an introduction; some organelle functions will be explored in more detail in other sections.) Cells differ in size, shape and structure in order to carry out specialised functions [link to tissues]. 25 The differences between plant and animal cells (link to Grade 9). LIFE SCIENCES GRADES 10-12
  • 31. TERM 1 2 weeks Cell Division: The Cell Cycle including Mitosis: • Use suitable resources to examine cell division, e.g., • Textbooks 26 (8 hours) Mitosis Interphase, mitosis (with names of phases), cytokinesis microscope slides, micrographs, posters and models. • Charts and growth. Record observations as drawings. • Micrographs/micro-scope The Continuous Process of Mitosis: The division of a cell slides to form two identical cells. • Microscopes (Simple description with diagrams to show chromosome • Reference books changes so that one parent cell forms two identical daughter cells.) • The difference in telophase between plant and animal cells. Chromosomes: are found in nuclei of all cells; two chromatids and centromere. LIFE SCIENCES GRADES 10-12 Role of Mitosis: growth and repair; Reproduction in some simple organisms. Cancer: Uncontrolled cell division and growth • Research and present information on ONE of the • causes of cancer; cancers. This must include causes, prevalence and treatment. Information can be presented verbally or • beliefs and attitudes concerning cancer (discuss as a written report. briefly); • treatments of cancer; and • medical biotechnology, e.g., radiotherapy and chemotherapy (no detail required). 1 week Plant and Introduction to tissues • Textbooks (4 hours) Animal Tissues Introduce the concept of a tissue as a group of similar • Charts CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS) cells adapted for a particular function; cell differentiation. • Microscope slides Emphasise the relationship between their basic structure • Micrographs and function. • Microscopes Plant Tissues • Examine and identify some plant tissues using Total Xylem, phloem, parenchyma, collenchyma, microscope, biostrips, micrographs or posters. Draw 9 weeks sclerenchyma, epidermis and meristematic tissues. cells that make up these tissues to show specialised (36 hours) structure.
  • 32. TERM 1 Assessment • One formal, recorded class test. • One practical task. • Assessment for learning (informal) using a variety • Refer to the range of skills specified under Specific CAPS of strategies and appropriate forms of assessment Aim 2. in tests, homework exercises, worksheets, reports, summaries, essays, etc. Refer to the range of skills listed under Specific Aims 1 and 3. Note that knowledge and understanding of investigations and practical work should also be assessed in written worksheets, reports, homework exercises and tests. The cognitive skills listed under Specific Aims 1 and 3 will also apply to knowledge and understanding of investigations. 27 LIFE SCIENCES GRADES 10-12
  • 33. TERM 2 Strand 1: Life at Molecular, Cellular and Tissue Level (continued) 28 Time Topic Content Investigations Resources 2 weeks (8 Plant and Animal Tissues • Examine and identify some animal tissues using • Textbook hours) Animal Tissues The Four basic types with some examples: microscope, biostrips, micrographs or posters. • Charts (continued) Draw the cells that make up these tissues to show • epithelial; • Microscope slides/ specialised structure. • connective; micrographs • muscle; and • Microscopes • nerve tissues • Reference books The relationship between structure and function. (No detail required - some tissues, e.g., blood and nerves in the reflex arc, will be covered in more detail in relevant LIFE SCIENCES GRADES 10-12 sections.) Applications of Indigenous Knowledge Systems and • Collect information on ONE field of biotechnology Biotechnology related to plant or animal tissues e.g., cloning, stem cell research or in vitro fertilisation. • traditional technology, e.g., traditional medicines and healers; • medical biotechnology, e.g., immunity, vaccines, antibiotics and blood transfusions; and • the cloning of plant and animal tissues and stem cell research (ethics and legislation). ½ week Organs Organs consist of a number of tissues. Leaf structure will • Observe and draw a section of a dicotyledonous leaf. • Textbooks (2 hours) be used as an example of an organ. Other organs will be • Charts dealt with in their relevant sections in life processes. CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS) • Micrographs/bioviewers Leaf Structure Options: • Microscopes A cross-section of a dicotyledonous leaf to demonstrate • Observe prepared slides of a cross section of a leaf. • Micrographs/bioviewers and explain its structure in terms of its functions, i.e. OR photosynthesis, gas exchange and transport. Link this with plant tissues, appropriate cell organelles, movement • Observe micrographs. across membranes and movement of molecules into, OR through and out of the leaf. • Observe bioviewer slide strips
  • 34. TERM 2 Strand 2: Life Processes in Plants and Animals Learners explore the anatomy of plants and animals in respect of support and transport systems. In animals, the different support systems are compared, with a focus on the human CAPS support system and locomotion. 3 weeks Support and Anatomy of Dicotyledonous Plants (link to Grade 7) • Use a microscope or micrographs to observe and • Textbook (12 hours) Transport • Root and stem: the distribution of different tissues; draw cross sections of root and stem (plan only). • Microscopes Systems in • If microscopes are available make mounts of, and • the structure of cells in different tissues (link to plant • Prepared slides Plants draw, whole xylem vessels from celery or pumpkin tissues) • Glass slides stalks to see secondary thickening patterns. • Cover slips • Pumpkin or celery stems • Blades or scalpels • Secondary growth (link to cell division); the annual • Observe annual rings in a cut tree to assess age and • Coloured ink/food rings in a tree trunk to assess age and to infer climate climatic conditions . colouring change. Transpiration • Design an investigation to discover the effect of • Potometer The relationship between water loss and leaf structure temperature, light intensity or humidity on transpiration • Beakers (link to Term 1). rate (using a simple potometer). Identify variables and • Leafy twigs control variables. Factors that affect the rate of transpiration are: • temperature; • Investigate water uptake through the roots • light intensity; • wind; • humidity. • Soft plant e.g., Busy • Investigate water movement through xylem (use • Wilting and Guttation Lizzie/Impatiens Impatiens if possible). • the intake of water and minerals into the xylem in • Eosin roots; • Glass containers - the transport of water and minerals to leaves; - The translocation of manufactured food from 29 leaves to other parts of plant LIFE SCIENCES GRADES 10-12
  • 35. TERM 2 3 weeks Support Skeletons • Observe the human skeleton (model or photographs). • Textbooks 30 (12 hours) Systems in • Examples of animals with: • Models Animals - a hydrostatic skeleton, • Photographs - an endoskeleton and - an exoskeleton Advantages and disadvantages of each. • Emphasise developmental progression and relate it to the need for support linked to a terrestrial lifestyle. Human Skeleton LIFE SCIENCES GRADES 10-12 • the axial skeleton: mention of facial bones, cranium, foramen magnum, palate and jaws (to link with human evolution in Grade 12); and • the appendicular skeleton. Functions of the Skeleton • Movement • Protection • Support • Storage of minerals • Hearing CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS) • Structure of a long bone; • Observe and draw a typical longbone: longitudinal • Selection of cut long • the relationship between the structure and function of section bones (from butchery) the following tissues: - bone; • Observe as many of these tissues as possible: fresh • Obtain material from a - cartilage; material from a butcher butcher: Joint with bone, cartilage ligaments - tendons; OR - ligaments.
  • 36. TERM 2 Joints • Observe and describe the movement which occurs at • Microscope prepared • Fixed joints each of these types of joints. If possible, observe an slides CAPS X-ray of ball and socket and hinge joints OR • Partly movable joints • Freely movable (synovial) joints. Structure of synovial • Micrographs joints: ball and socket, hinge, pivot and gliding. The roles of the following in human locomotion: • X-rays if possible • bones; • joints; • ligaments; • tendons; • antagonistic muscles (e.g., biceps/triceps). • The Structure of voluntary skeletal muscles: Myofibrils Total and muscle contraction. 8½ weeks • Diseases that affect the skeleton: Rickets in children, (34 hours) osteoporosis, arthritis, etc. Assessment • One formal, recorded class test. One practical task. • Mid-year examination (2½ hrs). Refer to the range of skills specified in Specific Aims 1 Refer to the range of skills specified in Specific Aim 2. and 3. Assessment for learning (informal) using a variety of strategies and appropriate forms of assessment in homework exercises, written worksheets, reports, summaries, essays, tests, etc. Note that knowledge and understanding of investigations and practical work should also be assessed in written worksheets, homework exercises, reports, tests, essays and examinations. The cognitive skills listed under Specific Aims 1 and 3 will also apply to knowledge and understanding of investigations. 31 LIFE SCIENCES GRADES 10-12
  • 37. TERM 3 Strand 2: Life Processes in Plants and Animals (Continued)) 32 Learners study the transport systems of the human body. Time Topic Content Investigations Resources 3 weeks Transport Circulatory System • Textbooks (12 hours) Systems in • The blood circulation system: pulmonary and systemic • Charts Mammals (double, closed) circulatory systems, including the: (Human) • Dissection of mammal heart (sheep, cow or pig) - heart and associated blood vessels; • Sheep, cow or pig heart obtained from a butchery. Identify chambers, valves, obtained from a butchery. - heart internal and external structure related to muscle, and blood vessels. • Scalpels or blades functioning; and - cardiac cycle (the flow of blood through the heart) • The direction of blood flow: the difference between • In pairs, measure the pulse of one learner before and • Stop watch or cell phone LIFE SCIENCES GRADES 10-12 oxygenated and deoxygenated blood in different parts after exercise. Record, interpret and explain the data clocks of the system (diagram or schematic drawing): presented as a graph. - lungs and pulmonary system and associated blood vessels; - major organs and systemic system; the associated major blood vessels of the brain, small intestine, liver and kidneys. • The mechanisms for controlling the cardiac cycle and heart rate (pulse). • The blood vessels, including the structure and • Observe and draw prepared microscope slides or • Microscopes functioning of arteries, veins with valves and micrographs of blood cells and blood vessels as seen capillaries. in cross section. • Prepared slides or CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS) • Lymph: the relationship between the blood system • Draw a table of the differences between different micrographs and lymphatic system. Functions of lymphatic system. types of blood vessels. • Diseases of the heart and circulatory system, e.g., high and low blood pressure, heart attacks and strokes, the treatments of heart diseases, e.g., stents, valve replacements, bypass surgery, pacemakers, and heart transplants (mention only).
  • 38. TERM 3 Strand 3: Environmental Studies Organisms interact with other organisms and with the environments in which they live in order to survive and produce offspring. The study of these interactions is called ecology. This CAPS section is structured to expose learners to some of the interactions that occur in nature and to the terminology and concepts that describe them. For the Grade 11 curriculum, the terminology and concepts selected here will be used across all strands, where appropriate. This will enable learners to contextualise the meaning of these terms and concepts within the familiar contexts of their local area as well as Southern Africa as a whole. The local area context is also used to introduce how humans influence the environments in which they and other organisms live. The effect man has had on the environment - both locally and globally - will be examined in more detail in Grade 11. This section also builds on the knowledge that has been acquired during the Senior Phase. Time Topic Content Investigations Resources 6 weeks Biosphere to Biosphere • Textbooks (24 hours) Ecosystems • The concept of the biosphere. • The inter-connectedness with and components of the global ecosystem: the hydrosphere, lithosphere and atmosphere (Links to Grade 8). Biomes • Terrestrial and aquatic biomes of southern Africa and how climate, soils and vegetation influence the organisms found in each. • The location of the different biomes in South Africa. Environment The concept of environment in terms of human activities in and interactions with the natural environment. Abiotic and biotic factors: effects on the community. Ecosystems Fieldwork • Identification guides The concept of ecosystem, structure and ecosystem Choose ONE ecosystem (close to the school) within a and keys to groups of functioning: local biome for special study. The study must: organisms • Abiotic factors: • Access to an ecosystem - physiographic factors (aspect, slope, and altitude) • deal with abiotic and biotic factors and the interactions • Map of South Africa - soil (pH, humus content, texture, water retention between them; • DVDs capacity and air content) • the trophic relationships in an ecosystem; • The internet - light (day length and seasonal changes) • record and describe seasonal changes over two terms • Nature programmes on - temperature (effect of day/night and seasons) either Terms 1 and 2 or Terms 3 and 4 TV - water (water cycle and the importance of • biodiversity within the ecosystem using field guides • Local information 33 wetlands) and keys • Appropriate instruments • positive and/or negative human impact on the for measuring abiotic LIFE SCIENCES GRADES 10-12 ecosystem factors.
  • 39. TERM 3 - atmospheric gases (link to pollution-Grade 12); Different groups should investigate different factors. 34 and Each group must plan, collect, record and present, - wind (link to transpiration). analyse and evaluate data. - Biotic factors, which include: (Links to Grade 8) (This serves as an introduction/link to human influences - producers on the environment in Grade 11.) - consumers - decomposers. • Energy flow through ecosystems and relationship to trophic structure (food pyramids): - Trophic levels: producers, consumers (herbivores and carnivores and omnivores , decomposers (link with Grade 9 and nutrition in Grade 11); LIFE SCIENCES GRADES 10-12 - Flow charts of the following: nutrients water, oxygen, carbon and nitrogen cycles (Names, e.g., nitrates are required but no detail of chemistry is necessary) • Ecotourism: Total: 9 - economics weeks - ethics (36 hours) - opportunities Assessment • One formal, recorded class test. One practical task • Assessment for learning (informal) using a variety of strategies and appropriate forms of assessment in Refer to the range of skills specified under Specific Aim 2. CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS) written worksheets, homework exercises, summaries, reports, essays, etc. Refer to range of skills specified in Specific Aims1 and 3. Note that knowledge and understanding of investigations and practical work should also be assessed in written worksheets, reports, homework exercises and tests. The cognitive skills listed under Specific Aims 1 and 3 will also apply to the knowledge and understanding of investigations.
  • 40. TERM 4 Strand 4: Diversity, Change and Continuity Life exists in a huge array of forms and modes of life which scientists organise according to man-made classification systems. Modern life forms have a long history, extending from the CAPS first bacteria, around 3,5 billion years ago. South Africa has a rich fossil record of some key events in the history of life. Changes in life forms are related to climate changes as well as movements of continents and oceans over long periods of time. Time Topic Content Investigations Resources 1 week Biodiversity Biodiversity • Textbooks (4 hours) and Enormous biodiversity on Earth (large variety of species, • Photographs Classification different ecosystems and genetic differences) with an • Micrographs emphasis on the extent of biodiversity and endemism in southern Africa: indigenous and endemic species. • Principles of classification by grouping everyday • Classification Schemes objects on the basis of shared similarities into a Classification schemes are a way of organising simple nested hierarchy. • A selection of everyday biodiversity objects • Brief history of classification: Scientists attempt to • Identification guides classify organisms based on shared features. As • Keys to groups of information increases classification changes. organisms One of the currently accepted classification systems is the five-kingdom system: Animalia, Plantae, Fungi, Protista and Monera (Bacteria). • The naming of things in science: species concept and binomial system. Focus on Linnaeus (Carl von Linne) and his role in classification systems: Why do we use Latin? • Differences between prokaryotes and eukaryotes (link to cell structure). • The main groupings of living organisms, diagnostic • Classify a selection of familiar organisms into • Identification guides features of each: groups based on visible evidence. Use keys and • Keys - Bacteria identification guides. • Photographs - Protista 35 - Fungi - Plants LIFE SCIENCES GRADES 10-12 - Animals
  • 41. TERM 4 5 weeks History of Life Life’s History:Change throughtout the history of life • Construct a timeline showing the history of life on 36 (20 hours) on Earth on Earth Earth. The timeline should show key events from the • Changes in the composition of the atmosphere (eg. emergence of the earliest life forms to the present increases in the levels of oxygen) day to emphasise the long history of life. • changes in climate (eg. ice ages) • Research ‘missing link’ between dinosaurs and birds eg. Archaeopteryx • geological events (eg. movements of continents) and their effect on the distribution of living organisms Coelacanth as an example of a living fossil found off (biogeography) the coast of South Africa Evidence for changing sea level and rise and fall of Present a verbal or written report. the land (eg. bivalves and ammonites found on the Makhatini Flats in Northern KZN, whale fossils in the Sahara, trilobites in the Karoo • The three eras: Paleozoic, Mesozoic and Coenozoic LIFE SCIENCES GRADES 10-12 periods are each divided into periods (Names of periods not to be memorised): • Geological Timescale The meaning and use of timescales (details not to be memorised). • Cambrian Explosion The Cambrian Explosion, which gives us insights into the origins of the major forms of all animal groups. In the last four million years, significant changes have occurred in species occurring in Africa (e.g., humans) CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS) (Link with Grade 12). • Mass Extinctions • Various hypotheses have been proposed for the extinction, 65 million years ago, such as the There have been five mass extinctions throughout meteorite impact theory and the volcanism evidence history, two of which are particularly important: 250 mya (in India) theory. Select ONE of these hypotheses (the extinction of about 90% of all life on Earth) and and describe the evidence scientists have gathered 65 Mya (the extinction of many species, including the in support of it. (Nature of science) dinosaurs). The rate of extinction on the Earth at present is higher than at any time in the past. The present time has been called the sixth extinction (Links to Grades 11 and 12).
  • 42. TERM 4 • Fossil Formation and Methods of Dating Them • Examine fossils at a museum or fossil site or study Fossil formation and methods of dating them, e.g., photographs of fossils. CAPS radiometric dating and relative dating. • Optional: Use plaster of Paris to construct a ‘fossil’. • Key Events There is evidence from South Africa of certain key • Map the Key fossil sites on a map of South Africa events in life’s history: • origins of the earliest forms of life: evidence of single- celled fossilised bacteria (stromatolites) from many parts of South Africa; • soft-bodied animals in Namibia, Northern Cape; • early land plants in the Grahamstown area; • forests of primitive plants such as Glossopteris near Mooi River and Estcourt; • location of coal deposits in South Africa (map only); • the coelacanth as a ‘living fossil’ found on the Northern KwaZulu-Natal coast; • mammal-like reptiles found in the Karoo (e.g. Lystrosaurus and Thrinaxodon); • dinosaurs (in the foothills of Drakensberg and Maluti mountains), as well as cone-bearing plants; • early mammals (Eastern Cape and Lesotho); • humans and pre-humans (eg Gauteng, (Cradle of Humankind) Namibia, North West (Taung), Free State (Florisbad), KwaZulu-Natal (Border Cave) and, Limpopo (Makapansgat)). Understanding Fossils • Scientists use deductive reasoning (inference) to understand fossils and the history of life on Earth. The impact of humans on biodiversity and the natural environment. 37 Total: 6 Fossil Tourism weeks Fossil tourism is a source of income and employment in LIFE SCIENCES GRADES 10-12 (24 hours) some localities.
  • 43. TERM 4 Assessment • One formal recorded class test Practical examination(1 hour) 38 • One project/assignment • End-of-year examination (2 x 2½ hours) Note: The practical work done during the year must develop the range of skills described Assessment for learning (informal) using a variety of in Specific Aim 2. The practical examination will assess some of these skills. strategies and appropriate forms of assessment in exercises, summaries, essays, tests, etc. Refer to range of skills specified in Specific Aims 1 and 3. Note that knowledge and understanding of investigations and practical work should also be assessed in written worksheets, reports, homework exercises and tests. The cognitive skills listed under Specific Aims 1 and LIFE SCIENCES GRADES 10-12 3 will also apply to knowledge and understanding of investigations. CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
  • 44. 3.2 GRADE 11: CONTENT TERM 1 CAPS Strand 1: Diversity, Change and Continuity Life exists in a wide variety of forms which live in different niches. This section enables learners to be exposed to an array of life forms from microorganisms to macroscopic plants and animals. These are organised according to a man-made system of classification based on observable features. Learners explore the roles of organisms in an ecosystem including microorganisms that are a major cause of diseases. This strand also includes some evolutionary development in plant and animal phyla. Time Topic Content Investigations Resources 3 weeks Biodiversity Biodiversity • Where possible, the prevalence of bacteria/fungi • Textbooks (12 hours) and • Microorganisms: basic structure and general should be demonstrated by growing cultures on agar • Reference books Classification characteristics of the following groups (links with plates, or bread mould (fungus) on bread. • Charts of Grade 9 and 10): • Agar Microorgaisms - viruses • Petri dishes - bacteria • Hand lenses - protista - fungi. (Macroscopic organisms in the protista and fungi should only be mentioned - not studied in any detail) • Mention of the roles that these groups play in maintaining balance in the environment and web of life. • Symbiotic relationships, including, nitrogen fixing bacteria in plants and E.Coli in the human intestine (link with Grade 10). • The effect and management of one disease from • Look for evidence of bacterial/fungal diseases on each of the four groups: plants (school and home). Map the distriution of one - viruses (rabies, HIV/AIDS, influenza) disease in the study area. - bacteria (blight, cholera, tuberculosis, anthrax) - protists (malaria) - fungi (rusts, thrush, ringworm, athlete’s foot). • Immunity, including plants and animals’ immune responses of against the infecting microorganism Vaccinations (briefly). • The use of drugs, e.g., antibiotics; effect on microorganisms • The use of microorganisms to produce medicines 39 (e.g., insulin and antibiotics). • Traditional technology to produce, e.g., beer, wine LIFE SCIENCES GRADES 10-12 and cheese.
  • 45. TERM 1 3 weeks Biodiversity of • Grouping of bryophytes, pteridophytes, • Observe and draw relevant macroscopic parts to • Text books 40 Plants gymnosperms and angiosperms according to the provide examples of each of the following divisions: (12 hours) • Plant specimens (Focus on the presence/absence of: - bryophytes: moss plant • Identification guides/keys Developmental - vascular tissue (xylem and phloem) - pteridophytes: rhizome, frond with sori • Hand lens Lines and Not - true leaves and roots - gymnosperms: needles, cones and seeds; and on In-Depth • Micrographs - seeds or spores - angiosperms: flower, fruit and seeds. Studies of • Charts Life Cycles. - fruit. • Models Learners Decreasing dependence on water for reproduction from Bryophytes to Angiosperms • Microscopes should have a basic • Prepared slides understanding of Phylogenetic Trees as LIFE SCIENCES GRADES 10-12 reconstructions of evolutionary pathways) and cladograms • Asexual and sexual reproduction, name • Draw a phylogenetic tree showing the evolutionary advantages and disadvantages of each. history of the four plant groups and major structural Reproduction • Flowers as reproductive structures changes in their history of development. in Plants Adaptations for pollination through (different • Dissect an example of each of the following types of Various flowers pollinators) wind, insects and birds (South African examples only) differences and similarities. flowers: Scalpels or blades - wind pollinated Hand lenses CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS) - insect pollinated Micrographs - bird pollinated. Record observations in a comparative table. • The Significance of Seeds Optional: Germinate seeds: record process. Seeds - seed banks; - seeds as a food source; and - endemic species in South Africa.
  • 46. TERM 1 2 weeks Biodiversity of • The relationship between the body plan and grouping • Calculate approximate surface area to volume ratios • Textbooks (8 hours) Animals with a of animals in phyla. The concept of a phylum. of selected examples. • Reference books CAPS focus on six of • Six phyla (out of about 30 in the animal kingdom): • Observe examples from as many phyla as possible • Photographs the major phyla (photographs/DVDs). - Porifera • DVDs if possible. - Cnidaria • Select one phylum and design a poster to show (Focus on the diversity in that phylum in South Africa. - Platyhelminthes Developmental - Annelida Lines and Phylogenetic - Arthropoda Trees. No - Chordata. Further Details • Key features in respect of body plans: • Construct a comparative table of these four key are Required features in the six selected phyla. - symmetry and cephalisation; Regarding the Morphology of - the number of tissue layers developed from the Six Phyla). embryo; - the number of openings in the gut; - coelom and blood systems. • The relationship between body plans and modes of living for each of the six phyla; similarities and Total differences. 8 weeks • The role of invertebrates in agriculture and ecosystems (32 hours) (e.g., pollination, decomposition, soil aeration etc.) Assessment • One formal recorded class test. • One practical task. • Assess learning (informal) using a variety of strategies and appropriate forms of assessment in tests, homework exercises, worksheets, reports, summaries, essays, etc. Refer to the range of skills listed under Specific Aims • Refer to the range of skills specified under Specific Aim 2. 1 and 3. Note that knowledge and understanding to investigations and practical work should also be assessed in written worksheets, reports, homework exercises and tests. The cognitive skills listed under Specific Aims 1 and 41 3 will also apply to the knowledge and understanding of investigations. LIFE SCIENCES GRADES 10-12
  • 47. TERM 2 Strand 2: Life Processes in Plants and Animals 42 Organisms require energy to stay alive. They get this in one of two ways: by harnessing radiant energy from the sun and transforming it into chemical energy which they can use (autotrophs) or (if they cannot do this themselves), by eating other organisms (heterotrophs). The energy transformations that sustain life are include photosynthesis, (where energy is incorporated in to food), animal nutrition (where the food is processed so that it can get to the cells), and cellular respiration (how this energy is made available to organisms in order to stay alive). Gaseous exchange between an organism and its environment is necessary for photosynthesis and cellular respiration. Life processes also involve the removal of carbon dioxide and later the removal of nitrogenous wastes from the body through the kidney. Time Topic Content Investigations Resources 3 weeks Energy Photosynthesis Essential • Textbooks (12 hours) Transformations • process of photosynthesis using words and symbols: • Investigate photosynthesis by showing that • Living plants to Sustain Life the intake of raw materials, trapping and storing - starch is produced during photosynthesis; and • Suitable equipment of energy, formation of food in chloroplasts and its - light is necessary for photosynthesis. • Chemicals storage. The release of oxygen. Mention only of light • The following investigations can be done (by LIFE SCIENCES GRADES 10-12 and dark phases (no biochemical details of light and learners) as experiments or as demonstrations: dark phases are required); - carbon dioxide is necessary for photosynthesis; • importance of photosynthesis: release of oxygen, uptake of carbon dioxide from atmosphere, food - chlorophyll is necessary for photosynthesis production (trapping energy); - oxygen is produced during photosynthesis; • effects of variable amounts of light, carbon dioxide or and temperature on the rate of photosynthesis (brief - data can be provided and interpreted by learners. discussion together with graphs). • The role of carbon dioxide enrichment, optimum light and optimum temperatures in greenhouse systems to improve crop yields (link to environmental issues discussed later). CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS) • Role of ATP as an important energy carrier in the cell.
  • 48. TERM 2 3 weeks Animal Nutrition • The differences in dentition for herbivorous, • Textbooks (12 hours) (Mammals) carnivorous and omnivorous lifestyles in terms of • Newspapers CAPS nutritional requirements and energy relationships • Popular magazines (link with ecology - food chains). • Obtain intestines of a sheep from a butcher and trace • Sheep intestines • Human nutrition the passage that food will take. obtained from a butchery. The macro-structure of the alimentary canal and • Cut open the stomach, portion of the small intestine • Scalpels or sharp knives associated organs and the functions of the different and a portion of the large intestine to compare the • Hand lenses parts. structure of the wall in each. • The Processes of ingestion, digestion, absorption, assimilation and egestion and the significance of each: - Mechanical or physical digestion: types and functions of different kinds of teeth, processes of chewing. Peristalsis • DVD/video to show - Chemical digestion: Enzymes: functions of dissection of a mammal carbohydrases, proteases and lipases: where in progress produced; substrate, pH and end-products (Specific enzymes need not be named - link to enzyme activity.) - Absorption: small intestine as a region of most absorption of digested food; adaptations to increase surface area. Structure (to tissue level) and significance of villi. Importance of hepatic portal system in the transport of absorbed food to the liver and then through hepatic vein to the rest of the body - Assimilation: incorporation of glucose and amino acids into cells, the role of the liver: glucose metabolism, deamination of excess amino acids, and the breakdown of alcohol, drugs and hormones. • Homeostatic Control Hormonal control of blood sugar levels.Increase in 43 the number of people affected by diabetes in recent years and brief explanation of diabetes. LIFE SCIENCES GRADES 10-12
  • 49. TERM 2 • The relationships between food intake, energy, • Selection of food 44 growth and health. The importance of a balanced diet packaging and changing requirements due to age, gender and activity levels. - Different diets due to cultural, religious, personal and health choices, e.g., vegan, vegetarian, halaal, kosher - Interpret dietary information on food packaging; • Calculate the nutritional value of a meal/diet. Use - Dietary supplements: for health, sport, beauty dietary information or food packaging. and anti-ageing (link to organic and inorganic substances) - Malnutrition: the reason for and the effects of • Photographs of the malnutrition with respect to unbalanced diets effects of kwashiorkor, LIFE SCIENCES GRADES 10-12 (e.g., kwashiorkor), starvation (e.g., marasmus marasmus, anorexia, and anorexia), bulimia, food allergies, coronary obesity heart disease, diabetes and obesity. • Analysis of information in the popular press, or any other sources, with respect to malnutrition. • Tooth decay related to diet and fluoride in water supplies and its effect on teeth. Magazines, newspaper • The effects of alcohol and drug abuse and the articles etc. dangers associated with their misuse. CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
  • 50. TERM 2 1½ weeks Energy • Cellular Respiration • Design an investigation or demonstration to show • Textbooks (6 hours) Transformations The process of respiration and uses of energy for that: • Snails CAPS to Sustain Life. living cells: - oxygen is used by living organisms during or - aerobic respiration: in cytoplasm and mitochondria; respiration. • seedlings use words and symbols: glycolysis, Krebs cycle and - carbon dioxide is produced by living organisms • Chemicals oxidative phosphorylation during respiration • Appropriate (no biochemical detail is required); or equipment - anaerobic respiration: production of lactic acid in - provide relevant data that can be interpreted by muscles during exercise; words and symbols (no learners. Identify variables, suggest controls for biochemical detail of process is required); variables and record observations - The role of anaerobic respiration in the industry, e.g beer brewing and bread making. Total A comparison between aerobic respiration and 7½ weeks anaerobic respiration in terms of raw materials required, (34 hours) products and relative amounts of energy released. Assessment • One formal recorded class test. • One practical task • Mid-year examination (2½ hours) • Assessment for learning (informal) using a variety of strategies and appropriate forms of assessment in tests, homework exercises, worksheets, reports, summaries, essays, etc. • Refer to the range of skills specified under Specific Aim 2 Refer to the range of skills listed under Specific Aims 1 and 3. Note that knowledge and understanding to investigations and practical work should also be assessed in written worksheets, reports, homework exercises and tests. The cognitive skills listed under Specific Aims 1 and 3 will also apply to knowledge and understanding of investigations. 45 LIFE SCIENCES GRADES 10-12
  • 51. TERM 3 Strand 2: Life Processes in Plants and Animals (continued) 46 Time Topic Content Investigations Resources 2½ weeks Gaseous Distinguish between cellular respiration, breathing and • Textbooks (10 hours) Exchange gas exchange. The need for gas exchange. • Models • Requirements of efficient Gas Exchange Organs: • Use books end on end and one on top of another • Charts - large surface area to illustrate and calculate the differences in respect • Dissection board and of surface area to volume ratio which is caused - thin instruments by different shapes: e.g., flatworm (Planaria) and - moist earthworm. • DVDs/videos - well ventilated • Hand lenses - protected - transport system. LIFE SCIENCES GRADES 10-12 These requirements are met in different ways in different environments, e.g., compare aquatic and terrestrial animals and plants. Brief mention of how these requirements are met in: - dicotyledonous plant - earthworm - insect - bony fish - mammal. • Human Gas Exchange: • Observe and investigate the structure of the lungs, The structure (macro and tissue level), location, diaphragm, associated pulmonary blood vessels and CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS) adaptations and functioning of the ventilation system: the heart of a pig or a sheep obtained from a butcher. - trachea • Construct a model of the human breathing system. Explain the limitations of the model. - epiglottis • Demonstrate that expired air contains carbon dioxide. - bronchi - bronchioles
  • 52. TERM 3 - lungs • Measure and compare the depth of breathing of - ribs two or more learners and the effect of exercise on CAPS breathing/pulse rate. Interpret data on depth and rate - intercostal muscles of breathing. - diaphragm - alveoli. Ventilation of the lungs: - gaseous exchange in alveoli; - the transport of gases around the body; • Analyse and interpret data showing the effects of - gaseous exchange in tissues; and altitude on the number of red blood cells and the - composition of inspired air vs. expired air- analyse consequent effect on athletes at different altitudes data. (Links to Grade 10.) Brief mention of the homeostatic control of breathing. • Diseases and abnormalities: causes symptoms and treatment of TB in South Africa. (Link to biodiversity - microorganisms) Brief study of other respiratory diseases: - asthma - hay fever - bronchitis - emphysema - lung cancer. The effects of smoking on gaseous exchange. Smoking legislation in South Africa. • Brief mention of artificial respiration and the effect of mouth to mouth resuscitation. • The effects of altitude on gaseous exchange, e.g., the performance of athletes in Johannesburg versus Durban or Cape Town. 47 LIFE SCIENCES GRADES 10-12
  • 53. TERM 3 2 ½ weeks Excretion in • Excretion in Various Organs: Brief role of the • Textbooks 48 (10 hours) Humans following: • Charts - the lungs; • Models - the kidneys and bladder; • Hand lenses - the liver; - the alimentary canal (gut); and - the skin. The substances excreted by each and the origins of these substances. • Urinary system The structure of the: • Dissection of a sheep’s or pig’s kidney (obtained from • Sheep or pig kidney (from butchery). Use a worksheet to identify the following: butchery) - urinary system: position of kidneys, ureters, bladder, LIFE SCIENCES GRADES 10-12 urethra. capsule, cortex, medulla, pyramids, blood vessels, • Scalpel/blade pelvis, ureter and hilum. - kidney: structure and functioning, removal of urea • Dissecting boards and excess water and salts, re-absorption of glucose Draw and label the dissected kidney • Scissors and some salts. - nephron: structure and functioning; ultra-filtration, re- Note: A pig’s kidney more absorption, tubular excretion, pH control, formation of closely resembles that of a urine human. • Homeostatic control of water and salts: role of ADH and aldosterone: Dialysis and kidney transplants. • Mention of diseases affecting kidney function, e.g. kidney stones, kidney failure due to overuse of some CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS) painkillers, effect of bilharzia infection.
  • 54. TERM 3 Strand 3: Environmental Studies Organisms interact with other organisms and with the environments in which they live. This section is structured so that learners must explore the impact of people on their environments CAPS (global, international and local). Learners are encouraged to look for and suggest solutions to local environmental problems. The intention is that learners will become more informed and more sensitive to environmental issues and will modify their behaviour to lessen their impact on the environment. Time Topic Content Investigations Resources 4 weeks Population • Population Size • Determine the size of a population by quadrant or • Textbooks (24 hours) Ecology Immigration, emigration, mortality, births. Fluctuations. simple sampling e.g., simulated mark/recapture. • Reference books Limiting factors and carrying capacity. Collect and record data, • Posters Logistic and geometric growth curves with phases. Interpret data • Charts Calculate/estimate the population size. • Brochures • Case study: Rationale for culling, e.g. elephants in the Kruger National Park as an example of an application of estimating population size (link to researched reasons for culling). • DVDs • Draw up a public survey form to test the public opinion about culling. Show results in a pie graph. • Newspapers • Magazines • Interactions in the Environment • Watching nature - predation: two South African examples of predator- programmes on TV prey relationships: graphs; - competition: interspecific: for light, space, water, shelter and food; intraspecific: for food, access to mates, water, space, and shelter; survival is determined by access to the above, ecological niches; - specialisation: competitive exclusion and resource partitioning; discuss one example of coexistence in animals and one example in plants; 49 LIFE SCIENCES GRADES 10-12
  • 55. TERM 3 - parasitism: two examples from South Africa; one • Draw a life cycle of the bilharzia parasite or tapeworm 50 species benefits (simplify larval stages). (Links to animal biodiversity) - mutualism: two examples from South Africa; both • Identify an area in or close to the school grounds where species benefit; succession is taking/has taken place. (e.g., in the goal - commensalism: two examples from South Africa. area on the sports field at the end of a season or a roadside that has been scraped). • Social Organisation: The benefits of herds/flocks (avoidance); packs (hunting); dominance; and the division of tasks (castes) (mention only). • Community change over time: Succession Primary and secondary succession and possible endpoints depending on environmental fluctuations (mention LIFE SCIENCES GRADES 10-12 only). • Human Population Reasons for exponential growth: - age and gender distributions for different countries, including South Africa; Total - forecast of South Africa’s population growth 9½ Weeks over the next twenty years and predict possible (38 Hours) consequences for the environment. Assessment • One formal recorded class test. • One practical task. • Assessment for learning (informal) using a variety of strategies and appropriate forms of assessment in tests, homework exercises, worksheets, reports, CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS) summaries, essays, etc. • Refer to the range of skills specified in Specific Aim 1. Refer to the range of skills listed under Specific Aims 1 and 3. Note that knowledge and understanding to investigations and practical work should also be assessed in written worksheets, reports, homework exercises and tests. The cognitive skills listed under Specific Aims 1 and 3 will also apply to knowledge and understanding of investigations.
  • 56. TERM 4 Stand 3 Environmental Studies (Continued): Human Impact on the Environment Note: Human Impact on the Environment must be completed in Grade 11, but this topic will be examined in both Grade 11 and in the National Senior Certificate at the end of Grade 12. CAPS In this knowledge strand, it is important to emphasise the interrelatedness and interdependence of the human impacts and the environment. Time Topic Content Investigations Resources 7 weeks Human Causes and consequences of the following (relate to • Practical observation of ONE example of human • Textbooks (28 hours) Impact on the conditions and circumstances in South Africa): influence on the environment in the local area (e.g., • Reference books Environment: • The atmosphere and climate change the impact of alien species on biodiversity). Written • Reports in the media Current Crises report on the chosen example. - carbon dioxide emissions; • Share - Net booklets for Human - concept of ‘carbon footprint’ and the need to Survival: reduce the carbon footprint; Problems to be Solved - deforestation; Within the Next - greenhouse effect and global warming: Generation desertification, drought and floods; - methane emissions; - ozone depletion. • Water • Availability: - Construction of dams - Destruction of wetlands - Poor farming practices - Droughts and floods - Exotic plantations and depletion of water table - Boreholes and effects on aquifers - Wastage - Cost of water • Quality: - Water for domestic use, industry, agriculture and mining: pollution, diseases, eutrophication and algal bloom. 51 - The effect of mining on quality of water - Thermal pollution LIFE SCIENCES GRADES 10-12
  • 57. TERM 4 - The need for water purification and recycling 52 - Alien plants, e.g., Eichornia • Food Security (link with population ecology dynamics) - human exponential population growth; - droughts and floods (climate change); - poor farming practices: monoculture; pest control, loss of topsoil and the need for fertilisers; - alien plants and reduction of agricultural land; - the loss of wild varieties: impact on gene pools; - genetically engineered foods; - wastage. LIFE SCIENCES GRADES 10-12 • Loss of Biodiversity (the sixth extinction) • Rhino poaching in South Africa: read articles and - habitat destruction: farming methods, e.g., make suggestions on how it can be prevented. overgrazing and monoculture, golf estates, mining, urbanisation, deforestation; loss of wetlands and grasslands; - poaching, e.g., for rhino horn, ivory and ‘bush meat’; - alien plant invasions: control using mechanical, chemical and biological methods; and - indigenous knowledge systems and the sustainable use of the environment e.g., devils’ claw, rooibos, fynbos, the African potato (Hypoxis) CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS) and Hoodia. • Solid Waste Disposal • Analyse the solid waste generated in the household - managing dumpsites for rehabilitation and in one week, including paper, metals and plastic. prevention of soil and water pollution; Estimate the percentage that could be recycled or - the need for recycling; reused. Total - using methane from dumpsites for domestic use: • Visit a municipal landfill site, or a local refuse dump. 7 weeks heating and lighting; and Observe rehabilitation (or lack thereof) in practice. (28 hours) - safe disposal of nuclear waste. • Assess the effectiveness of waste management.
  • 58. TERM 4 Assessment • One formal recorded class test. One practical exam (1 hour) • One project/assignment. CAPS • End-of-year examination: 2 x 2 ½ hours. • Assessment for learning (informal) using a variety of strategies and appropriate forms of assessment in tests, homework exercises, worksheets, reports, summaries, essays, etc. Refer to the range of skills listed under Specific Aims Note: Refer to the range of skills specified in Specific Aim 2. 1 and 3. Note that knowledge and understanding to investigations and practical work should also be assessed in written worksheets, reports, homework exercises and tests. The cognitive skills listed under Specific Aims 1 and 3 will also apply to knowledge and understanding of investigations. 53 LIFE SCIENCES GRADES 10-12
  • 59. 3.3 GRADE 12: CONTENT TERM 1 54 Strand 1: Life at Molecular, Cellular and Tissue Level All living organisms are made of atoms which combine to form molecules. Of these, DNA (or Deoxyribonucleic Acid) carries the genetic code for cell specialisation and cell functioning and DNA packages, as genes, determine what an organism will look like and how it will function. Plant and animal cells have a complex organisation which enables them to carry out the basic processes of life, i.e. movement, nutrition, respiration, excretion, growth, reproduction and responding to stimuli. Cells are specialised and form tissues which perform particular functions. Tissues are arranged into organs which are also specialised to carry out particular functions. In order to understand species, speciation, biodiversity and change, it is essential to understand how DNA and chromosomes enable continuity and change. Time Topic Content Investigations Resources 2½weeks DNA: The Code • Deoxyribonucleic acid (DNA) If possible: • Textbooks (10 hours) of Life - Location in the cell; chromosomes, genes and • Perform a simple process to extract DNA and examine • Micrographs extranuclear DNA; the threads • Equipment LIFE SCIENCES GRADES 10-12 - Discovery of the structure DNA by Watson, Crick, • Chemicals Franklin and Wilkins; - Structure of DNA; - Role of DNA: genes and non-coding DNA; If possible: - Replication: cell cycle (link to Grade 10): necessity • DNA ‘finger printing’/DNA profiling: (case study only) for exact copy. Ribonucleic Acid (RNA) - Types and location in cells; - Structure of RNA; - Transcription from DNA; - Translation of RNA into proteins (protein synthesis) CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS) (mRNA, tRNA): sequence of events; and - Genetic code (basic understanding).
  • 60. TERM 1 2 weeks Meiosis • Meiosis: the process of reduction division • Observe and draw prepared microscope slides, • Textbooks (8 hours) - purposes of reduction division (gametogenesis micrographs or models of cells in selected stages of • Posters CAPS and exceptions: mosses, ferns); meiotic cell division, e.g., crossing over in metaphase • Models I; anaphase I, metaphase II, telophase II. - importance of meiosis: diploid to haploid: • Microscopes production of gametes; • Prepared microscope - introduction of genetic variation (random slides or micrographs segregation, crossing over); - consequences of abnormal meiosis, e.g., Down’s syndrome • Mitosis and meiosis Similarities and differences between mitosis and meiosis (link to Grade 10) Strand 2: Life Processes in Plants and Animals This knowledge strand deals with the ways in which animals are able to respond to their environments in order to ensure survival. Learners explore different reproductive strategies in animals. Reproduction in humans is dealt with in more detail as a specific example of animal reproduction. This expands on the basic knowledge of human reproduction that was introduced in Grades 7 and 9. Time Topic Content Investigations Resources ½ week Reproduction • Diversity of reproductive strategies • Textbooks (2 hours) in Vertebrates Appropriate examples of different groups in the animal • Charts kingdom to illustrate maximising reproductive success in • Reference books different environments: • DVDs (if possible) - external or internal fertilisation - ovipary, ovovivipary, vivipary - amniotic egg - precocial and altricial development - parental care. 55 LIFE SCIENCES GRADES 10-12
  • 61. TERM 1 3 weeks Human • The structure of male and female reproductive • Prepared microscope slides of an ovary, testes and a • Textbooks 56 (12 hours) Reproduction systems; (link to Grade 7 and 9) section through a penis. Identify tissues and different • Charts • The unique human characteristics of some aspects of structures • Micrographs reproduction (link with Grade 9): • Observe and describe prepared microscope slides • Microscope - puberty: main changes; or micrographs or ultrasound pictures of embryonic • Prepared microscope development. - gametogenesis: relate briefly to meiosis (no slides individual names of stages); • If possible observe stages of pregnancy by watching • Ultrasound pictures of - menstrual cycle: emphasis on hormonal control; DVDs of the development of an embryo and the birth embryonic development process. - fertilisation and development of zygote to • DVDs Total • Observe contraceptive devices blastocyst; 8 weeks - gestation (mention briefly); (32 hours) - implantation and development: the role of LIFE SCIENCES GRADES 10-12 placenta. Assessment • One formal, recorded class test. • One practical task • Assessment for learning (informal) using a variety of strategies and appropriate forms of assessment in homework exercises, written worksheets, reports, summaries, essays, tests, etc. Refer to range of skills specified in Specific Aims 1 and 3. Note that knowledge and understanding of investigations and practical work should also be assessed in written • Refer to the range of skills specified in Specific aim 2. worksheets, homework exercises and tests. The cognitive skills listed under Specific Aims 1 and 3 will also apply to knowledge and understanding of investigations. CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
  • 62. TERM 2 Strand 1: Life at Molecular, Cellular and Tissue Level (continued); and Strand 4: Diversity, Change and Continuity CAPS Life exists in a variety of life forms and it is in the study of DNA, genetics and inherited characteristics that life at molecular level intersects with Strand 4: Diversity, Change and Continuity. In order to understand species, speciation, biodiversity and change, it is essential to understand how DNA and chromosomes enable continuity and change Time Topic Content Investigations Resources 4 weeks Genetics and • Genes: Dominant and recessive genes and alleles Solving genetic problems • Textbooks (16 hours) Inheritance Mention of Mendel, father of genetics • Monohybrid crosses • Reference books • Inheritance and variation • Dihybrid crosses - Monohybrid crosses: phenotype and genotype, • Complete and incomplete dominance homozygous and heterozygous (pure bred and • Blood groups hybrid); examples of complete, incomplete/partial • Sex chromosomes and sexually linked diseases e.g., dominance and codominance; haemophilia and colour blindness - Dihybrid crosses: phenotypes and genotypes. • Genetic lineages • Sex chromosomes Sex-linked alleles; sex-linked diseases • Mutations - harmless and harmful mutations: examples of diseases, disorders; gene mutations and chromosomal aberrations; and - useful mutations, link with natural selection • Genetic engineering: Stem cell research, genetically modified organisms, biotechnology and cloning. • Mention mitochondrial DNA and the tracing of genetic links • Paternity testing and DNA finger printing (forensics) 57 LIFE SCIENCES GRADES 10-12
  • 63. TERM 2 Strand 2: Life Processes in Plants and Animals (continued) 58 This continues investigating the ways in which animals and plants are able to respond to their environments in order to ensure their survival. Time Topic Content Investigations Resources 4 weeks Responding • Humans have two systems: nerves and • Textbooks (16 hours) to the hormones that enable them to respond to the • Wall charts Environment: environment. • Scalpel or blade Humans • Human nervous system Reactions to stimuli in the surroundings. • Models: - Central Nervous System: Brain: Meninges for • Model of the brain or a sheep’s brain in order to eye protection, location and functions of cerebrum, observe regions of brain. ear cerebellum, corpus callosum, medulla oblongata, Identify the cerebrum, cerebellum and spinal cord brain spinal cord • Examine a cross-section of spinal cord to observe LIFE SCIENCES GRADES 10-12 • Sheep’s skull sawn - Peripheral Nervous System: location and the white and grey matter. in half to expose the functions only brain (obtained from the - Autonomic Nervous System: location and butchery) functions only - Nerves: Structure of a nerve : Nerve tissue: structure of sensory neurons and motor neurons - Reflex arc: Structure, function and significance of a simple reflex arc. Significance of synapses • Obtain sawn through • Design an investigation to determine the reaction vertebrae from butcher to • Disorders: Alzheimer’s disease and multiple time of different learners to a stimulus. Record the show spinal cord. sclerosis results and calculate the average time. Calculate • Injuries: Brain and spinal damage. Mention stem cell the distance that will be travelled by a car travelling CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS) research and the possibility of repairing injuries. at 100 km per hour within the average reaction • Effects of drugs: Dagga, heroin, ecstasy, tik, etc. time. Apply this knowledge to safe driving: following (Links to Grade 11) distances..
  • 64. TERM 2 • Receptors • Eye of sheep or pig Detection of a range of stimuli: light, sound, touch, obtained from butchery CAPS temperature, pressure, pain and chemicals (taste and smell). Details of the structure of the eye and ear (only) - Human eye: structure and functioning, binocular • Dissect the eye of a sheep or pig. Observe the vision, accommodation, pupil reflex different regions. Worksheet to be used to follow - Short-sightedness, long-sightedness, instructions for dissecting and observing the astigmatism, cataracts (brief explanations using significant parts. diagrams) - Human ear: structure and functioning: hearing Total and balance 8 weeks - Hearing defects: deafness, middle ear infections, (32 hours) grommets Assessment • One formal, recorded class test. • One practical task • Mid-year examination (2½ hours) or control test • Assessment for learning (informal) using a variety of strategies and appropriate forms of assessment in homework exercises, flow diagrams, written worksheets, reports, summaries, essays, tests, etc. Refer to range of skills specified in Specific Aims • Refer to the range of skills specified in Specific Aim 2 1 and 3. Note that knowledge and understanding of investigations and practical work should also be assessed in written worksheets, homework exercises reports, essays etc. The cognitive skills listed under Specific Aims 1 and 3 will also apply to knowledge and understanding of investigations. 59 LIFE SCIENCES GRADES 10-12
  • 65. TERM 3 Strand 2:Life Processes in Plants and Animals (Continued) 60 This continues investigating the ways in which animals and plants are able to respond to their environments in order to ensure their survival. Time Topic Content Investigations Resources 1½ weeks Human • Endocrine glands • Research disorders caused by under-and over • Textbooks (6 hours) Endocrine Location in the body, hormones secreted, roles of secretion of at least one hormone. Different learners • Charts System hormones of the following glands: should research different hormones. Brief written • Photographs of giantism, report. - Hypothalamus : ADH dwarfism, and - Pituitary gland : TSH, FSH,LH, prolactin, growth persons suffering from: hormone (link to reproduction) hypothyroidism - Thyroid gland: thyroxin and hyperthyroidism - Pancreas: insulin, glucagon LIFE SCIENCES GRADES 10-12 - Adrenal gland: adrenalin, aldosterone - Gonads: oestrogen, progesterone and testosterone (link to reproduction) Examples of negative feedback mechanisms: TSH and thyroxin; insulin and glucagon; diabetes 1 week Homeostasis in • Homeostasis • Observe prepared microscope slides of a section • Textbooks (4 hours) Humans The process of maintaining a constant, optimal internal through human skin or use a micrograph or model. • Microscope prepared environment: Identify main features. slides - negative feedback: glucose, carbon dioxide; water or and salts; Micrographs CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS) - thermoregulation: adaptations of human skin; or model sweating, vasodilatation, vasoconstriction.
  • 66. TERM 3 1 week Responding • Plant hormones The general functions of auxins, • Design investigations to show geotropism and • Textbooks (4 hours) to the gibberellins, abscisic acid. phototropism. Identify the variables and recommend • Suitable equipment: CAPS Environment: Weed control by using growth hormones. ways to control the variables. Record and interpret the geotropism and Plants results. phototropism experiments • Geotropism and phototropism • If available, a klinostat should be used Growth regulation by auxins. • Seedlings • Plant defence mechanisms Chemicals, thorns. Strand 4: Diversity, Change and Continuity (continued): It is necessary to have a firm grasp on the work done earlier in the year on DNA, genetics and heredity in order to understand the concept of change, natural selection and evolution. This knowledge strand is expanded on by exploring the mechanisms of evolution and specifically human evolution in Africa. . Time Topic Content Investigations Resources 2 weeks Evolution • Origin of ideas about origins • Class debate and discussion. • Textbooks (8 hours) by Natural Different kinds of evidence: fossil record (link to Grade • Reference books. Selection 10), modification by descent, biogeography (link to Grade • Demonstrate natural selection through games, e.g., • Biography of Darwin (if 10), genetics (Grade 12) and other forms of evidence: camouflage possible and if learner - difference between hypothesis and theory; and • Research one example of artificial selection. Present shows interest) - brief overview of history of different theories findings in a report of development: Lamarckism, Darwinism, and Punctuated Equilibrium. • Artificial selection: ONE example of a domesticated animal and ONE example of a crop species. • Darwin’s theory of evolution by natural selection • Evolution (change) through natural selection (link to Genetics): depends on variation/gene pool of inherited characteristics, and the production of more offspring than is required. Changes in the environment. Pressure leads to extinction or successful adaption. 61 Continuous and discontinuous variation. LIFE SCIENCES GRADES 10-12
  • 67. TERM 3 • Formation/emergence of new species Speciation; 62 biological species concept. Interbreeding produces viable offspring in a species. ONE example of speciation due to geographic isolation (Galapagos finches, Galapagos tortoises, mammals or plants on different landmasses, e.g., baobabs in Africa and Madagascar, proteas in South Africa and Australia). • Mechanisms for reproductive isolation: Introduction to some examples: - breeding at different times of the year; LIFE SCIENCES GRADES 10-12 - species-specific courtship behaviour; - adaptation to different pollinators (plants); - prevention of fertilisation; - infertile offspring in cross-species hybrids. • Evolution in present times Examples of natural selection and evolution, e.g., resistance to insecticides in insects, bill and body size of Galapagos finches, resistance to antibiotics in various bacteria (TB), HIV resistance to anti- retrovirals. CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
  • 68. TERM 3 2 weeks Human • Evidence of common ancestors for living hominids • Poster presentation • Textbooks (8 hours) Evolution including humans: Anatomical differences and Map out the three major phases in hominid evolution from • Newspaper articles (e.g., CAPS similarities between African apes and humans: 6 mya up to the present: the discovery of Sediba) - Fossil evidence: key features: bipedalism (spine - Ardipithecus (Ethiopia) • DVDs if possible and pelvic girdle), brain size, teeth (dentition), - Australopithecus (East and South Africa) • Maps, pictures and prognathism and palate shape, cranial and brow - Homo (various sites) photographs ridges. The number of fossils that have been found (it is important to know that thousands of The map/timeline should show the diagnostic features fossil fragments have been found). and the approximate times that examples of the three major genera existed. It is not necessary to show the - Genetic evidence: mitochondrial DNA relationships between genera. (Scientists may interpret - Cultural evidence tool-making. relationships differently as new evidence is found) or • Out of Africa hypothesis (see Term 4) Evidence African origins for all modern humans: genetic links, mitochondrial DNA: - Rift valley fossil sites in East Africa (Kenya and Tanzania) and in Ethiopia. Scientists e.g., Johansen and White, the Leaky family - Fossils discovered at these sites: Ardipithecus, Total Australopithecus, Homo 7½ weeks - Fossils sites in South Africa: Fossils discovered at (30 hours) these sites: Australopithecus and Homo 63 LIFE SCIENCES GRADES 10-12
  • 69. TERM 3 Assessment • One formal, recorded test. • One practical task. 64 • Trial examination: 2 x 2½ hours. • One project/assignment. • Assessment for learning (informal) using a variety of strategies and appropriate forms of assessment in tests, homework exercise, written worksheets, reports, summaries, essays, etc. Refer to the range skills specified in Specific Aims 1 and 3 Note that knowledge and understanding of investigations and practical work should also be assessed in written • Refer to the range of skills specified in Specific Aim 2. worksheets, homework, summaries, reports and essays LIFE SCIENCES GRADES 10-12 and tests. The cognitive skills listed under Specific Aims 1 and 3 will also apply to knowledge and understanding of investigations. CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
  • 70. TERM 4 Strand 4: Diversity, Change and Continuity (continued) Time Topic Content Investigations Resources CAPS 2 weeks Human • Importance of the Cradle of Humankind: • Poster presentation: Map out the changes in the (8 hours) Evolution: - Main fossil sites in South Africa, e.g., Taung, evolution of the Genus: Homo. The map/timeline continued Sterkfontein, Kromdraai, Swartkrans, Malapa, should show where the different fossils have been Plovers Lake, Gladysvale, Makapansgat, found and the approximate periods that the selected Florisbad, Border Cave, Blombos: Evidence and examples existed. The most significant features of evolutionary trends from these sites (refer to each type of fossil (Genus and species) to illustrate dating of fossils Grade 10). At least two examples the difference between them. should be studied to see evolutionary trends. Mention scientists such as Dart, Broome, Tobias, Brain, Ron Clark, Berger, Keyser and others • Alternatives to evolution - different cultural and religious expalanations for • Research and discussion to share information the origin and development of life on Earth: about different explanations: cultural or religious - Creationism; explanations. - Intelligent Design; - Literalism - Theistic evolution 2 weeks • Do revision on particularly (but not only) Grade 11 (8 hours) work that will be examined in the NSC exam. Total 4 weeks (16 hours) Assessment: 2 x 2½ hour exams: Paper 1 and Paper 2 (topics specified) 65 LIFE SCIENCES GRADES 10-12
  • 71. LIFE SCIENCES GRADES 10-12 SECTION 4 ASSESSMENT 4.1 Introduction Assessment is a continuous planned process of identifying, gathering and interpreting information on learners’ performance, using various forms of assessment. It involves four steps: generating and collecting evidence of achievement; evaluating this evidence, recording the findings and using this information to understand and thereby assist the learners’ development in order to improve the process of learning and teaching. Assessment should be both informal (Assessment for Learning) and formal (Assessment of Learning). In both cases, regular feedback should be provided to learners to enhance their learning experience. Assessment is a process that measures individual learners’ attainment of knowledge (content, concepts and skills) in a subject by collecting, analysing and interpreting the data and information obtained from this process to: • enable the teacher to make reliable judgements about a learner’s progress; • inform learners about their strengths, weaknesses and progress; and • assist teachers, parents and other stakeholders in making decisions about the learning process and the progress of the learners. Assessment should be mapped against the content and intended aims specified for Life Sciences and in informal and formal assessments it is important to ensure that in the course of the year: • all of the subject content is covered; • the full range of skills is included; and • different forms of assessment are used. 4.2 Informal Assessment or Daily Assessment Assessment for learning has the purpose of continuously collecting information on learners’ achievement that can be used to improve their learning. Informal assessment is daily monitoring of learners’ progress. This is done through observations, discussions, practical demonstrations, learner-teacher conferences, informal classroom interactions, etc. Informal assessment may be as simple as stopping during the lesson to observe learners or to discuss how their learning is progressing. Informal assessment should be used to provide feedback to the learners and to inform planning for teaching, but it need not be recorded. It should not be seen as separate from learning activities taking place in the classroom. Learners or teachers can mark these assessment tasks. Self-assessment and peer assessment actively involve the learners being assessed. This is important as it allows learners to learn from and reflect on their own performance. The results of the informal daily assessment tasks are not formally recorded unless the teacher wishes to do so. The results of daily assessment tasks are not taken into account for promotion or certification purposes. 66 CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
  • 72. LIFE SCIENCES GRADES 10-12 Informal, ongoing assessments should be used to structure the acquisition of knowledge and skills and should be a precursor to formal tasks in the Programme of Assessment. 4.3 Formal Assessment Grades Formal school-based assessments End-of-year examinations R-3 100% n/a 4-6 75% 25% 7-9 40% 60% 10 and 11 25% including a mid-year examination 75% 12 25% including mid-year and trial External examination: 75% examinations All assessment tasks that make up a formal programme of assessment for the year are regarded as formal assessment. Formal assessment tasks are marked and formally recorded by the teacher for progression and certification purposes. All formal assessment tasks are subject to moderation to ensure that appropriate standards are maintained. Formal assessment provides teachers with a systematic way of evaluating how well learners are progressing in a grade and in a particular subject. Examples of formal assessments include tests, examinations, practical tasks, projects, oral presentations, demonstrations and performances. Formal assessment tasks form part of a year-long formal Programme of Assessment in each grade and subject. The cognitive demands in assessment should be appropriate for the age and developmental level of the learners in the grade. Assessment in Life Sciences must cater for a range of cognitive levels and abilities of learners. The assessment tasks should be carefully designed to cover the content of the subject as well as the range of skills and the cognitive levels that have been identified in the specific aims. The design of assessments should therefore ensure that a full range of content and skills are assessed within each Grade in the Phase. The specific aims, topics, content and range of skills in the subject should be used to inform the planning and development of assessments. Weighting of Cognitive Demands for the Assessment of content in Grades 10, 11 and 12 Evaluating, Understanding Applying scientific analysing and Knowing Science Science knowledge synthesising scientific knowledge % 40% 25% 20% 15% Examples of Useful • State • Explain • Predict • Select Verbs • Name • Compare • Apply • Differentiate • Label • Rearrange • Use knowledge • Analyse • List • Give an example of • Demonstrate • Infer • Define • Illustrate • Solve • Suggest a reason • Describe • Calculate • Implement • Discuss and others • Make a • Judge • Categorise generalisation and others and others and others CAPS 67
  • 73. LIFE SCIENCES GRADES 10-12 Note: A single, formal class test per term will not necessarily provide the most accurate and reliable evidence of every learner’s performance. As far as possible, teachers should try to let learners write more than one test per term in order to get a better picture of their abilities. One formal class test per term is the minimum number that must be recorded. The requirements (number and nature of tasks) for Life Sciences are indicated below: 4.4 Assessment Requirements for Life Sciences: 4.4.1 Grade 10 The programme of assessment is designed to spread formal assessment tasks in all subjects in a school throughout a term. GRADE 10 PROGRAMME OF FORMAL ASSESSMENT END-OF-YEAR INTERNAL FORMAL, RECORDED, SCHOOL-BASED ASSESSMENTS EXAMINATION 75% Two Written Practical Examinations Content Practical Examination (2½ Hours + 2½ (1 Hour) Hours) • Four tests (minimum of 50 marks A selection of three representative This exam tests This exam each) practical tasks, which cover the knowledge on tests practical • One midyear examination (2½ range of skills, must be marked and content, concepts knowledge and hours 150 marks) recorded. (The marks allocated for a and skills across skills practical task should range from 20 to all topics. This should be set • One project/assignment (can be 40.) Knowledge of by each teacher done in any term: 100 marks in the The range of skills is described in practical work as taking into account fourth term) Specific Aim 2. well as some of the resources • Skills are listed under Specific Aims the skills related that are available 1 and 3 to practical work for practical must be assessed examination. in the written examination. 80% = 60 marks 20% = 15 marks School-based Assessment (During the Year) 75 Term 1 Term 2 Term 3 Term 4 • One test • One test • One test • One test • One selected • One selected • One selected • One project/ practical task practical task practical task assignment • Mid-year * Environmental examination studies: fieldwork 25% 25% 25% 25% Convert to 25% 75% * This is an example of a project/assignment. 68 CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
  • 74. LIFE SCIENCES GRADES 10-12 4.4.2 Grade 11 PROGRAMME OF FORMAL ASSESSMENT FORMAL, RECORDED, SCHOOL-BASED ASSESSMENTS END-OF-YEAR INTERNAL EXAMINATION 75% Content Practical Two Written Practical Examinations Examination(1 (2½ hours + 2½ hour) hours) • Four tests (minimum of 50 marks A selection of three representative These exams This exam each) practical tasks, which cover the test knowledge tests practical • One mid-year examination (2½ range of skills, must be marked and on content, knowledge and hours, 150 marks) recorded. (The marks allocated for a concepts and skills • One project/assignment (can be practical task should range from 20 to skills across all This should be set done in any term: 100 marks in Term 40). topics. Knowledge by each teacher 4) The range of skills is described in of practical work taking into account • Skills are listed under Specific Aims Specific Aim 2. as well as some of the resources 1 and 3 the skills related that are available to practical work for practical must be assessed examination. in the written examination. 80% = 60 marks 20% = 15 marks School-based Assessment (during the year) 75 Term 1 Term 2 Term 3 Term 4 • One test • One test • One test • One test • One selected • One selected • One selected • One project/ practical task practical task practical task assignment • Mid-year * Environmental examination studies: fieldwork 25% 25% 25% 25% 75% *This is an example of a project/assignment. CAPS 69
  • 75. LIFE SCIENCES GRADES 10-12 The requirements (number and nature of tasks) for Life Sciences are indicated below: 4.4.3 Grade 12 PROGRAMME OF FORMAL ASSESSMENT TRIAL: END-OF-YEAR FORMAL, RECORDED, SCHOOL-BASED ASSESSMENTS INTERNAL EXAMINATION 50% Two written examinations Content Practical (2½ hours + 2½ hours) • Four tests (minimum of 50 marks each) A selection of three These exams test knowledge representative practical of content, concepts and • *One mid-year examination (2½ hours, 150 marks) or tasks, which cover the skills across all topics. control test range of skills, must be Knowledge of practical work • One trial examination (2 x 2½ hours, 300 marks) marked and recorded. as well as some of the skills • One project/assignment (can be done in any term: 100 (The marks allocated for a related to practical work marks in term 3). practical task should range must be assessed in the from 20 to 40). written examination • Skills are listed under Specific Aims 1 and 3 The range of skills is described in Specific Aim 2. School-based assessment (during the year) Term 1 Term 2 Term 3 and Term 4 • One test • One test • One test The trial (preliminary) • One selected practical • One selected practical • One selected practical examination should be set task task task (will not be included on the work completed in in year mark) Terms 1, 2 and 3. *  Mid-year examination or control test project/assignment *  Environmental studies: fieldwork 33% 33% 33% Convert to 50% 50% * Note: Schools that are performing well (above an 80% pass rate in the previous year) may elect not to write the mid-year examination. Note: The year mark will be converted to 25% and the external examination will count 75% of the final mark. 70 CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
  • 76. LIFE SCIENCES GRADES 10-12 4.5 THE END-OF-YEAR EXAMINATIONS: 4.5.1 Grade 10 The examination will consist of two examination papers of 2½ hours and 150 marks each. The weighting and assessment of topics in Paper 1 and Paper 2 will be as follows: Paper 1 Weighting Topic Time % Marks T1: • Chemistry of Life 2½ weeks 16 23 • Cells: Basic Units of Life 3 weeks 17 25 • Cell Division: Mitosis 2 weeks 12 18 • Plant and Animal Tissues 1 week 5 (50) 9 T2: • Plant and Animal Tissues 2 weeks 13 20 • Plant Organs (Leaf) ½ week 3 5 • Support and Transport Systems: Plants 3 weeks 17 25 • Support Systems: Animals 3 weeks 17 (50) 25 Totals 17 weeks 100% 150 Paper 2 Weighting Topic Time % Marks T3: • Transport Systems in mammals 3 weeks 20 30 • Biosphere to Ecosystems 6 weeks 40 (60) 60 T 4: • Biodiversity and Classification 1 week 7 10 • History of Life and Earth 5 weeks 33 (40) 50 Totals 15 weeks 100% 150 The weighting per topic must serve as a guideline for teachers; slight deviations in respect of the number of marks allocated to a topic are acceptable. The purpose of providing the weighting is to ensure that all topics are covered according to approximately the correct weighting. CAPS 71
  • 77. LIFE SCIENCES GRADES 10-12 4.5.2 Grade 11 The examination will consist of two examination papers of 2½ hours and 150 marks each. The weighting and assessment of topics in Paper 1 and Paper 2 will be as follows: Paper 1 Weighting Topic Time % Marks T2 • Energy transformations to sustain Life: Photosynthesis 3 weeks 18 27 • Animal Nutrition 3 weeks 18 27 • Energy transformation: Respiration 1½ weeks 10 15 T3 • Gas exchange 2½ weeks 15 22 • Excretion in humans 2½ weeks 15 23 • Population Ecology 4 weeks 24 36 Totals 16½ weeks 100% 150 Paper 2 Weighting Topic Time % Marks T1 • Biodiversity and classification of micro-organisms 3 weeks 20 30 • Biodiversity in plants and reproduction 3 weeks 20 30 • Biodiversity of animals 2 weeks 13 20 T4 • Human impact on the environment: 7 weeks 47 70 • current crises Totals 15 weeks 100% 150 72 CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
  • 78. LIFE SCIENCES GRADES 10-12 The weighting per topic must serve as a guideline for teachers; slight deviations in respect of the number of marks allocated to a topic are acceptable. The purpose of providing the weighting is to ensure that all topics are covered in approximately the correct weighting. 4.5.3 Grade 12 The examination will consist of two examination papers of 2½ hours and 150 marks each. The weighting and assessment of topics in Paper 1 and Paper 2 will be as follows: Paper 1 Weighting Topic Time % Marks T1 • Meiosis 1 week 7 11 • Reproduction in Vertebrates ½ week 4 6 • Human Reproduction 3 weeks 21 31 T2 • Responding to be environment (humans) 4 weeks 27 40 T3 • Human endocrine system 1½ weeks 10 15 • Homeostasis in humans 1 week 7 11 • Responding to the Environment (plants) 1 week 7 11 T4 • Human impact (Grade 11) ‘2½ weeks’ 17 25 Totals 14½weeks 100% 150 Paper 2 Weighting Topic Time % Marks T1 • DNA: Code of Life 2½ weeks 19 27 • Meiosis 1 week 7 12 T2 • Genetics and Inheritance 4 weeks 30 45 T3 • Evolution through Natural Selection 2 weeks 15 23 T 3/T4 • Human evolution 4 weeks 29 43 Totals 13½ weeks 100% 150 The weighting per topic must serve only as a guideline to teachers and examiners and is included to ensure that all topics are adequately covered in examinations. The number of marks per topic is not expected to be exactly according to this weighting in the examination papers. CAPS 73
  • 79. LIFE SCIENCES GRADES 10-12 4.6 RECORDING AND REPORTING Recording is a process in which the teacher documents the level of a learner’s performance in a specific assessment task. It indicates learner progress towards the achievement of knowledge as prescribed in the Curriculum and Assessment Policy Statement. Records of learner performance should provide evidence of the learner’s conceptual progression within a grade and her or his readiness to progress or be promoted to the next grade. Records of learner performance should also be used to verify the progress made by teachers and learners during the teaching and learning process. Reporting is a process of communicating learner performance to learners, parents, schools, and other stakeholders. Learner performance can be reported in a number of ways. These include report cards, parents’ meetings, school visitation days, parent-teacher conferences, phone calls, letters, class or school newsletters, etc. For all grades, teachers report learners’ achievements in percentages next to the appropriate subject. The various achievement levels and their corresponding percentage bands are as shown in the table below. Note: The seven-point scale should have clear descriptions that give detailed information for each level. Teachers will record actual marks against the task by suing a record sheet; and report percentages against the subject on the learners’ report cards. Codes and Percentages for Reporting in Grades R-12 Rating code Description of competence Percentage 7 Outstanding achievement 80- 100 6 Meritorious achievement 70 - 79 5 Substantial achievement 60 - 69 4 Adequate achievement 50 - 59 3 Moderate achievement 40 - 49 2 Elementary achievement 30 - 39 1 Not achieved 0 - 29 Schools are required to provide quarterly feedback to parents on the Programme of Assessment using a formal reporting tool such as a report card. The schedule and the report card should indicate the overall level of a learners’ performance. 4.7 MODERATION OF ASSESSMENT Moderation refers to the process that ensures that the assessment tasks are fair, valid and reliable. Moderation should be implemented at school and district level and if necessary also at provincial level. Comprehensive and appropriate moderation practices must be in place for the quality assurance of all subject assessments. 4.7.1 Grades 10 and 11 In Grades 10 and 11 Formal School-based Assessment and the Practical Assessment Tasks should be moderated by the relevant subject specialists at district and, if necessary, provincial levels in consultation with the moderators at the school. Moderation serves five purposes: 74 CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)
  • 80. LIFE SCIENCES GRADES 10-12 • Firstly, it should ascertain whether the subject-specific content and skills are sufficiently covered. • Secondly, the moderator must ensure that the various levels of cognitive demand are reflected in the assessments. • Thirdly, that the assessments and marking are of an acceptable standard and consistency. • Fourthly, to ensure that assessment in different schools are more or less comparable whilst recognising that different teachers have different standards. • Finally, to identify areas in which the teacher may need further support and development and to provide such necessary support In Grades 10 and 11 there is no compulsory national moderation. Moderation is therefore an ongoing process and not a once-off end-of-year event. 4.7.2 Grade 12 Moderation refers to the process which ensures that the assessment tasks are fair, valid and reliable. Moderation should be implemented at school, district, provincial and national levels. Comprehensive and appropriate moderation practices must be in place for the quality assurance of all subject assessments. 4.7.2.1 Formal Assessment (School-based Assessment - SBA) In Grade 12, moderation must take place at four levels: • School-based moderation and verification of learner performance This is intended to ensure that the assessments meet the requirements in terms of content, cognitive demands and skills; that the marking has been consistent and fair and that the marks are a true reflection of learners’ performance in the assessments. This will enable the school to easily identify problems related to the pacing, standard and reliability of assessment and to ensure that appropriate interventions are put in place early. This is an ongoing process. • Moderation by the subject advisor This is also an ongoing process. Subject advisors should moderate assessments, to ascertain whether: - Subject-specific content and skills have been covered adequately; - The prescribed number of assessments have been complied with; - the appropriate cognitive demands are reflected in the assessments; - the marking is of an acceptable standard and is consistent; - the assessments in different schools are comparable whilst recognising that different teachers teach and assess differently. CAPS 75
  • 81. LIFE SCIENCES GRADES 10-12 Subject advisors should provide teachers with the necessary guidance and support should any shortcomings be identified. Early identification of shortcomings and early interventions are essential. It is therefore necessary that moderation at this level should be ongoing and not a once-off end-of-year event. • Moderation by the province Moderation of SBA at this level is once-off and is related to the quality assurance processes that are necessary developed jointly by the Department of Basic Education and Umalusi in terms of National Policy. • At a national level Statistical moderation of learner performance in the School Based Assessment is necessary to ensure comparability across schools, districts, and provinces. Note that, in Grade 12, the assessment of Practical work is incorporated into the SBA (per term) and that there is no practical examination. This is because schools are not all equally resourced and some learners may be disadvantaged because of this. 4.8 GENERAL This document should be read in conjunction with: 4.8.1 National policy pertaining to the programme and promotion requirements of the National Curriculum Statement Grades R-12; and 4.8.2 The policy document, National Protocol for Assessment Grades R-12. 76 CURRICULUM AND ASSESSMENT POLICY STATEMENT (CAPS)