Smstx2
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This document is the table of contents for the Smart Science 2 textbook. It lists the chapters and lessons covered in the textbook, including the titles of each lesson. The textbook covers topics about the human body, animals and plants, matter and energy, and Earth and space. It is intended for grade 2 students and was reviewed by Dr. Marina Balce, who has degrees in biology education.
Smstx2
- 1. Smart Science 2 Textbook
- 2. Smart Science Grade 2 TexTbook Philippine Copyright 2009 by DIWA LEARNING SYSTEMS INC All rights reserved. Printed in the Philippines Editorial, design, and layout by University Press of First Asia No part of this publication may be reproduced or transmitted in any form or by any means electronic or mechanical, including photocopying, recording, or any information storage and retrieval systems, without permission in writing from the copyright owner. Exclusively distributed by DIWA LEARNING SYSTEMS INC 4/F SEDCCO 1 Bldg. 120 Thailand corner Legazpi Streets Legaspi Village, 1229 Makati City, Philippines Tel. No.: (632) 893-8501 * Fax: (632) 817-8700 ISBN 978-971-46-0087-4 RevieweR Marina Balce was a former assistant dean and associate professor at the College of Education, La Salle College–Antipolo. She taught biological sciences for Psychology students and thesis writing for graduating Education students in the same college. She was also a Trainee of the Japan International Cooperation Agency (JICA) at the Aichi University in Nagoya, Japan, where she attended a special training on Practical Work in Elementary School Science. Dr. Balce finished her bachelor’s degree in Secondary Education major in Biology at the University of the East–Manila. She has a master’s degree in Biology Education from the De La Salle University–Manila and a doctorate in Science Education major in Biology from the University of the Philippines–Diliman.
- 3. To the Learner Do you ask yourself questions about the world you live in? Do you wonder about what lies beyond the blue skies or what rests below the seas? Do you ask questions about the blooming trees and colorful flowers you see, the heat and cold you feel, or the various scents you smell? Do you wonder about the sun, the moon, and the stars? Your young, active mind has so many questions because you are curious about so many things. This book will help you discover the answers to the questions you have about yourself, the world, and everything beyond it. This book will be your constant companion as you unlock the many mysteries of life through various learning experiences. Moreover, this book will teach you how to apply the wonders of science to your day-to-day activities. Let this book help you find the answers to the questions you have about yourself, your world, and your universe. Let this take you a step closer to understanding life and in discovering the wonders of science!
- 4. Unit 1 Your Body Chapter 1 Your Senses Lesson 1 The Things around You .............................................................2 Lesson 2 What Do You See? ....................................................................8 Lesson 3 What Do You Hear? ................................................................13 Lesson 4 What Do You Smell? ...............................................................18 Lesson 5 How Does It Taste?..................................................................22 Lesson 6 What Do You Feel? .................................................................27 Lesson 7 Your Sense Organs Work Together ..........................................31 Think Back ............................................................................................... 35 Measure Up! ............................................................................................... 36 Chapter 2 Your Body’s Needs Lesson 1 Food That Makes You Grow ....................................................37 Lesson 2 Food That Makes You Go ........................................................41 Lesson 3 Food That Makes You Glow ....................................................44 Lesson 4 Healthy Eating Habits ..............................................................48 Lesson 5 You Are Growing ....................................................................52 Lesson 6 Things That You Can Do Now ................................................55 . Think Back ............................................................................................... 59 Measure Up! ............................................................................................... 59 Unit 2 Wonders of Nature Chapter 3 The Animal Kingdom Lesson 1 How Animals Move.................................................................62 Lesson 2 How Animals Eat ....................................................................67 . Lesson 3 Animals Need Air ....................................................................71 Lesson 4 Animal Defenses .....................................................................74
- 5. Lesson 5 Animals of the Same Kind Have Similarities and Differences ...79 Lesson 6 Animals of Different Kinds Have Similarities ...........................83 . Lesson 7 Young Animals and Their Parents ............................................87 Lesson 8 Taking Care of Animals ...........................................................93 Think Back ............................................................................................... 97 Measure Up! ............................................................................................... 97 Chapter 4 The Plant Kingdom Lesson 1 Plants Grow ............................................................................99 . Lesson 2 Young and Mature Plants ......................................................103 . Lesson 3 Plants of the Same Kind Have Similarities and Differences ....106 . Lesson 4 Some Plants Bear Flowers and Fruits .....................................110 . Lesson 5 Basic Needs of Plants ............................................................116 Lesson 6 Uses of Plants ........................................................................123 Think Back ............................................................................................. 128 Measure Up! ............................................................................................. 128 Unit 3 Matter and Energy Chapter 5 Matter and You Lesson 1 Matter around You ................................................................132 Lesson 2 Phases of Matter ....................................................................136 Lesson 3 Shape and Volume of Solids ..................................................139 Lesson 4 Mass of Solids .......................................................................143 . Lesson 5 Liquids Take up Space ...........................................................147 Lesson 6 Mass of Liquids......................................................................151 Lesson 7 Gas Takes up Space ..............................................................154 . Lesson 8 Gas Has Mass ........................................................................157 Think Back ............................................................................................. 160 Measure Up! ............................................................................................. 161
- 6. Chapter 6 Energy around You Lesson 1 Light and Heat ......................................................................164 . Lesson 2 Light Travels ..........................................................................172 Lesson 3 Luminous and Nonluminous Objects ....................................175 Lesson 4 Sound Is Everywhere .............................................................178 Lesson 5 Magnets Can Attract Other Objects .......................................182 Think Back ............................................................................................. 185 Measure Up! ............................................................................................. 185 Unit 4 Earth and Beyond Chapter 7 Earth, Weather, and You Lesson 1 Earth and Its Landforms .........................................................188 Lesson 2 Earth and Its Bodies of Water .................................................193 Lesson 3 Earth Gives Useful Things .....................................................198 . Lesson 4 Natural Events That Change Earth ..........................................204 Lesson 5 Human Activities That Change Earth .....................................209 . Lesson 6 Taking Care of Mother Earth ..................................................213 Lesson 7 Different Kinds of Weather ....................................................220 Lesson 8 Weather Report .....................................................................225 Lesson 9 Observing Safety Measures during Bad Weather ...................229 . Think Back ............................................................................................. 233 Measure Up! ............................................................................................. 233 Chapter 8 The Solar System Lesson 1 Earth’s Nearest Neighbor .......................................................235 Lesson 2 The Bright Sun ......................................................................239 . Lesson 3 The Sun and Its Family ..........................................................243 Think Back ............................................................................................. 246 Measure Up! ............................................................................................. 247 Bibliography .................................................................................................. 249 .
- 7. Unit 1 Your Body Your body has parts that help you do things. You see beautiful places through your eyes. You hear sounds because of your ears. You smell the scent of flowers in your garden because of your nose. You can taste food because of your tongue. You can feel your pillow because it touches your skin. You should take good care of your body. One way to keep your body strong and healthy is to eat the right kind and amount of food.
- 8. Chapter 1 Your Senses Your sense organs help you collect information about the things in your surroundings. They send all these information to your brain. Without your sense organs, you will not be able to see, hear, smell, taste, and feel anything. Lesson 1 The Things around You Find Out 1. What are your sense organs? 2. Where do sense organs send all the information they get from the surroundings? One sunny Saturday afternoon, Gino and Lea went to the park. As they were walking, they felt the rough pebbles underneath their shoes. “Oh, my! It’s so hot today!” Gino cried out. “Tweet! Tweet! Tweet!” Lea and Gino heard the birds singing. They ran to the trees where the birds were. But the birds quickly flew away. Smart Science 2
- 9. As they continued to walk, Gino and Lea suddenly felt thirsty and hungry. They decided to go to Nina’s house. When they were nearing Nina’s house, they smelled something. “Hmmm! I smell sopas,” Gino said. “I smell banana cue,” Lea added. “Yum . . . yum . . . yum . . . This sopas is delicious!” Gino said as he sipped it. “This banana cue also tastes great!” Lea said. Do you know what makes you see, hear, smell, taste, and feel? Your body has sense organs that collect information about what you see, hear, smell, taste, and feel. These sense organs send the information to your brain. Your brain then tells you what you have seen, smelled, tasted, heard, and felt. You can tell how objects look by their colors, sizes, or shapes using your eyes. You can describe and know objects by their smell using your nose. Your Body
- 10. You can also describe and know objects by the sounds they make using your ears. You can describe the objects by their taste using your tongue. These tastes can be sweet, bitter, sour, salty, or umami. You can describe and know objects by touching them. You can feel smooth and rough objects using your skin. Smart Science 2
- 11. Explore Sense It! 1. There are five small boxes on the table. The boxes labeled A, B, C, D, and E contain one object each. 2. Pick out the object from Box A. What is the object? Describe it using your eyes. 3. Shake Box B. What do you hear? Guess what the object is. 4. Smell Box C. What is the object inside it? Note: If you are asthmatic, skip this step. 5. Get a partner and let him or her blindfold you. Your partner will pick an object from Box D and will let you taste it. What does it taste like? What is the object? Your Body
- 12. 6. Touch the object inside Box E. Is the object smooth or rough? What is the object? 7. Which sense organ did you use to identify the object in each box? Box Sense Organ A B C D E Keep in Mind Your sense organs gather information from your surroundings which they send to your brain. Without them, you cannot see, hear, smell, taste, and feel anything. Smart Science 2
- 13. Challenge Yourself List five things that can be found in the classroom. Describe each using the table below. Name the sense organs you used to describe each object. Taste Sound Texture Size Smell (sweet, Produced (rough Object Color (big or (pleasant or sour, bitter, Shape (loud or or small) unpleasant) salty, or soft) smooth) umami) 1. 2. 3. 4. 5. Sense organs used: Object 1 _______________________________________________ Object 2 _______________________________________________ Object 3 _______________________________________________ Object 4 _______________________________________________ Object 5 _______________________________________________ Your Body