# 7 e lesson plan grade 8 science first observation of 2019

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28 Oct 2019
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### 7 e lesson plan grade 8 science first observation of 2019

• 1. JOSEPHINE B.BADLON SHIRLEY C. DECEO Principal II_____________ Master Teacher Science_____________ Date: July 24, 2019 Teacher: Virgilio R. Paragele Content: Unit 1: Module 3: Heat and Temperature Content Standard: The learner demonstrate an understanding of heat and temperature and its effect on the body. Performance Standard: The learner shall be able to determine the heat absorb or heat released of an object, using the specific heat capacity. Grade level: 8 Carnation Learning Area: Science Materials: Beakers 4 pcs 250mL oil 500 mL Beakers 4 pcs 500mL water 500 mL Thermometer 4 pcs Stove 1 pc Teacher Activity Student Activity Preliminary Let us pray Everybodywill pray 1.Elicit Why do you think, some objects are hot while the others are cold? Students will give some ideas about heat. 2.Engage Asses the students ideas about heat, the heat transfer and change in temperature. Let the students answer some questions,and compute the change in the temperature, with corresponding amount of heat absorb or release. 3.Explore Give the students different forms of activity, then let them give their answers to the class Students will follow the steps and follow the instructions in an activity for differentiated instructions. Differentiated Activity Note. All liquids must be of the same initial mass and temperature. Give instructions and questions to each group. Group 1. Temperature variation: record their temperature after 3 minutes Group 2. Liquid variation(oil, and water) time reach five degrees Celsius increase 4.Explain Explain the concept and correct the errors made by the reports as students answers. Listen and participate in the discussion for calculation of heat 5. Elaborate Let the students review and repeat the activity In Students will repeat their experiment and finalize their
• 2. answers. 6. Evaluate Give quiz to asses the students understandings of heat transfer. Students will draw the direction of heat and solve for amount of heat. Then justify the answer Quiz : Complete the table Mass Initial temperature Final temperature Change in temperature Heat capacity= cal/gramC0 Heat absorb or released(cal) 150grams 28 0 C 34 0 C 1 cal/gramC0 100 grams 20 0 C 66 0 C 1.5 cal/gramC0 200 grams 63 0 C 45 0 C 1.3 cal/gramC0 1. Whichof the two materialsrelease heat:the spoonorthe cup whenyoustiryour coffee? 2. Whenyoudive intothe swimmingpool atTimoga at 7am. Did yourelease heat orabsorb heat? 7.Extend How did the water and oil affect the rate heat transfer? Can they share the heat to their containers? How will they absorb heat from the container? Students in different groups will give their ideas or answers.
• 3. Group 1: Materials : 2 beakers, oil, water, water on the kettle, thermometer, stove Procedure: 1. Put the hot water on the 2 pcs 500mL 2. Put into separate beakers the water and oil with the same mass. 3. Record the temperature of the oil and water in the beaker on table 1 4. Put the hot water into the 500mL beakers , put the two 250mL beakers into the boiling water, and make sure that the water in the 500mL is 1/3 of the height of the 250mL beaker. 5. Record their temperatures after 2 minutes on table 1. Table 1 Liquids Mass Initial temperature Final temperature Heat capacity= cal/gramC0 Differencein Temperature Heat absorb Water Oil Guide Questions: 1. Which of the liquids absorbs heat faster? 2. Which of the liquid absorbs heat slower? 3. How much heat is absorb in the water? 4. Is it the same to the amount of heat absorbed by the oil?
• 4. Group 2: Materials : 2 beakers 250mL, oil, water, hot on water on 500mL(2pcs) thermometer 1. Put water on one beaker and oil on the other beaker. They must have the same mass. 2. Record the initial temperature of the water and oil on table 2 3. Put the hot water onto the 500mL beakers about 1/3 the height of the 250mL beakers 4. Put the two beakers simultaneously on the hot as you start your timer. 5. Record the time when the temperature of the liquid on the beaker reaches 5 degrees Celsius increase on the table 2. Table 2 Liquids Mass Initial temperature Final temperature Heat capacity= cal/gramC0 Time to reach five degrees Celsius increase Heat absorb Water Oil Guide Questions: 1. Which of the liquids absorbs heat faster? 2. Which of the liquid absorbs heat slower? 3. How much heat is absorbed in the water? 4. Is it the same to the amount of heat absorbed by the oil?