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Detailed lesson plan in science vi

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Detailed lesson plan in science vi

  1. 1. DETAILED LESSON PLAN IN SCIENCE VI I. OBJECTIVES At the end of the lesson, the pupils are expected to: a. Identify the effects of human activities and the cycles in an ecosystem. b. Illustrate the cycle in an ecosystem c. Give importance to the ecosystem II. LEARNING CONTENT TOPIC: Human Activities and the Cycles in an Ecosystem MATERIALS: Charts, Pictures REFERENCE: Science and Health 6, pp.84-87 III. LEARNING EXPERIENCE TEACHER’S ACTIVITY PUPIL’S ACTIVITY A. PREPARATION Opening Prayer Checking of Attendance Review of the Past Lesson B. PRESENTATION The atmosphere normally has about 21% oygen and 0.03% carbon dioxide. The continuous exchange of these gases between green plants and animals maintains the oxygen-carbon dioxide level. Unfortunately, man’s destructive activities disrupt this balance. Class, why do you think that man’s destructive activities disrupt this balance? (The teacher will call one pupil) (The pupil answer) Very Good! So class, if trees and another green plant become scarce in an ecosystem will
  2. 2. , the supply of oxygen is reduced. As a result, the amount of CO2 in the air increases, and the O2 and CO2 is disrupted. Class, what do you think will happen to animals And human if the amount of air is reduced? (Pupils will answer) Possible Answer: Many animals and humans will die. Very good! Many animals and humans may die due to the shortage of the amount of oxygen in the air. (Show some pictures about Oxygen-Carbon Cycle) In the Oxygen-Carbon Cycle, green plants Use the carbon dioxide in the air and it also dissolve in the oceans and seas. Marine plants take in carbon dioxide to manufacture food. These plants are the energy source of marine animals. The continuity of the cycle depends on the materials and energy available in the system. Class, what do you think is the cause of disruption? Ma’am. Because of the natural disaster and human activities. Very good. Can you give me examples of natural calamities? (Call 3 pupils) (Show pictures of the natural disasters.) Typhoon, earthquakes, and volcanic eruptions can destroy an ecosystem. What about human activities that disrupt The cycles in ecosystem? (Call some pupils) Typhoon Eartquakes Volcanic Eruptions
  3. 3. - - Throwing of garbage in the river Cutting of trees Kaingin Spraying of insecticides Combustion of fossils Very good! (Post the picture of “Throwing of Garbage”) Throwing garbage can destroy the ecosystem. The river’s natural capacity to break the material slows down. As a result, the once clear pond becomes dirty due to the amount of materials dumped in it. (Show pictures of “Cutting Of Trees”) The cutting down of trees has resulted in the rapid denudation of our forest. Without trees there is nothing to absorb excess amount of Carbon Dioxide in the atmosphere which results to the abnormal warming of the earth. The next human activity is “Pagkakaingin”. Why do you think pagkakaingin destroys the ecosystem? (The teacher will call pupils) Possible answer: The birds and other living organisms will be deprived of natural habitat. Yes. Kaingin brings harmful effects to our ecosystem. Kaingin is a way of clearing a forest area and convert it into an agricultural lands, or housing projects to accommodate the growing population. Therefore, the birds and other wild animals will be deprived of natural habitat.
  4. 4. Another example is the use of insecticides. (Post the picture) Class, why do you think the use of insecticides Also destroys the ecosystem? Possible answer: It pollutes the land Right. The use of chemical fertilizers, pesticides, and pollutes the soil. Also, these chemicals harm plants and is also possible to harm humans and animals once taken. C. GENERALIZATION The cycles of ecosystem may be disrupted by natural disasters such as typhoon, earthquakes, volcanic eruptions and by human activities such as uncontrooled cutting of trss, kaingin, combustion of fossil fuels, and throwing of garbage in the river. IV. EVALUATION TRUE OR FALSE. 1. Typhoon is a natural disaster. (True) 2. Throwing garbage can destroy the ecosystem. (True) 3. Kaingin is a way of clearing a forest area and convert it into an agricultural lands, or housing projects to accommodate the growing population. (True) 4. The birds and other living organisms will be deprived of natural habitat is not a harmful effect of pagkakaingin. (False) 5. Without trees there is nothing to absorb excess amount of Carbon Dioxide in the atmosphere which results to the abnormal warming of the earth. (True) V. ASSIGNMENT List down fast growing trees that should be planted to increase forest cover.

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