2ndquarter wk7 oct2-6.doc
- 1. Daily Lesson Log School Bacoor National High School-Molino Main Grade Level 8 Teacher ERNESTO S. CAJUCOM JR. Learning Area SCIENCE Teaching Dates and Time October 02-06, 2017 Quarter 2nd Monday Tuesday Wednesday Thursday Friday I. OBJECTIVES Differentiate comets and asteroids; Determine the different characteristics of comets and asteroids; NATIONAL ACHIEVEMENT TEST Determine Near-Earth Objects (NEO); Identify the place of origin of comets and asteroids; Explain the Alvarez hypothesis about asteroids Describe the changes that happens to a fragment from a comet or asteroid as it enters Earth’s atmosphere; Represent the relationship between a meteoroid, meteor, and meteorite using a diagram A .Content Standards The learners demonstrate an understanding of the characteristics of comets, meteors and asteroids. B .Performance Standards The learners shall be able to discuss whether or not beliefs and practices about comets and meteors have scientific basis. C. Learning Competencies/ Objectives S8ES-IIg-22 II. SUBJECT MATTER A. Concepts B. Materials Visual Aids Video clip C. References 107-108 Learner’s Material 133-135 D. Process Skills E. Values Integration III. LEARNING TASKS A. Elicit Story telling -Call three to four volunteers to share about what they know or a past experience about comets, asteroids, or meteors based on recent events. Challenge the students by posing the question: Why do you think asteroid can be seen more on Earth more often than comets? Call some volunteers to give their idea on how asteroids and meteors are related. Continuation of Activity 2
- 2. B. Engage Relate the stories given by the students to the new lesson Call volunteers to give a short discussion on Asteroid 2012 DA14 Discuss to the student the procedure of their activity. C. Explore Using visual aids, discuss the differences between comets and asteroids. Explain to the students the location of the place of origin of comets and asteroids. Explain to the students the objective of Activity #2 D. Explain Give the Venn Diagram activity found in the Pre/Post test part at the end of this TG. Ask the students to relate its location to its orbital year. Let the student perform Activity #2 on learners manual. E. Elaborate Call representatives from each group to present their answers and explain as necessary. Tell the groups to prepare a table with three columns (as shown below) and write the following words on each column: comet, asteroid, and meteor. Group ________ What we know about… Comets Asteroids Discussion of the answers on Guide Questions. F. Evaluate Scientist continuously looking for evidences of dinosaur existence. Pair Work: Let the students work with a partner in answering the guide questions. G. Extend The composition of a comet is important in helping scientists understand how Earth has liquid water, which in turn made the planet livable. The chemical composition of an asteroid is important in providing clues for scientists to discover more about the chemical composition of Earth and the Alvarez Hypothesis proposed that an asteroid with approximately 10 kilometers in diameter made impact with Earth 65 million years ago. They thought that the impact caused materials to be thrown up in air, thus blocking sunlight, and bringing about a period of winter long enough to cause a mass extinction of plants and
- 3. other planets in the Solar System, as well as how life on Earth was affected by impacts in the past. animals, including the dinosaurs. IV. ASSIGNMENT V. REMARKS