DETAILED LESSON PLAN IN SCIENCE GRADE 7 CONTENT STANDARD: The learners demonstrate an understanding of how heat is transferred. LEARNING COMPETENCY/COMPETENCIES: Infer the conditions necessary for heat transfer to occur. I. OBJECTIVES At the end of the session, the students are expected to: a. a. Identify what is heat and temperature b. Illustrate the three methods of heat transfer c. Investigate the conditions necessary for heat transfer to take place II. SUBJECT MATTER a. Topic: Heat b. Reference: https://www.slideshare.net/guest451a35/heat transferpresentation https://www.simscale.com/docs/simwiki/heat transfer-thermalanalysis/what-is-heat-transfer/ c. Materials: laptop, printed picture, ice, glass, water. III. PROCEDURES a. Putting class in order. b. Opening Prayer c. Greetings d. Checking of Attendance e. Checking of Assignment f. Recapitulation III. PROCEDURES Teachers’ activity Students Activity A. Preparations: Greetings “Good morning, Class!” Prayer Alright, let us all stand-up for our prayer. Kindly lead the prayer Checking of Attendance “Please say present when your name is called.” (Teacher calls each student) Expected answer: “Good morning, Ma’am” (Student will pray) (Everybody says present) Review of the past lesson Activity: Pass the cabbage Instruction: The 'cabbage’ will pass on each table and the teacher will play some cool music and the student will pass the cabbage around the table. When the music stops, the group holding the cabbage must take off a layer and answer what is being asked Motivation What do you think is the reason why an ice melt in the glass of water? Because of warm water What do you think is the reason why an ice cream melt in the table? Because of the heat from the surroundings Why do we need umbrellas and sunglasses during sunny day? What do you think is the common in this picture? Because of the heat coming from the sun. It is heat ma’am. Okay, very good! Today, we will move on to the next topic which is the heat. In our today’s discussion we will emphasize that heat is continue transferring as long as the temperature is difference B. Lesson Proper Before we are going to our proper discussion let’s have a short activity first: • Activity Now class, let us have a picture puzzle. As you can see, I have 3 envelopes here. Inside it is the picture that you are going to form. I will divide the class into 3 groups. Each group will have 1 envelope with the picture. I will give you 5 minutes to do that. And remember class, you must stay with your Yes ma’am respective group because after the activity I will give points to those groups who can answer my question regarding the presented topic we have today. Is it okay with you? Okay, you may now start. Group 1 Group 2 Group 3 • Analysis How was the activity class? Expected answer: Enjoy ma’am! What did you feel during the activity? Expected answer: We feel very excited and its little bit confusing. What is your observation based on the activity we perform today? Expected answer: I think ma’am Those pictures are related to Heat which is our topic for today, and it is used to explain the concepts about how heat transfer. Okay, can you identify what is heat? Yes, representative in group 1 Possible answer: For me, heat is a form of energy that can be transferred from one object to another. Very Good. Heat is the transfer of energy from a one object to another due to a difference in temperature. What is the difference between heat and temperature? Heat is the transfer of thermal energy, whereas temperature is the hotness and coldness of an object. What do you think is the direction or flow of the heat energy? Yes, representative in group 3 Possible answer: It always takes from the substance of higher temperature to the substance of lower temperature. And it will continue to move until both substances are at the same temperature. Excellent Idea, heat energy will always move from a warmer substance to a cooler substance. The greater the difference in temperature between substances the faster the heat will transfer. This is because the molecules are vibrating faster and transfer their energy to the molecules vibrating slower. Abstraction Now class, there are 3 types of heat transfer. Can you describe me the picture in the first group? Which among the material is a conductor of heat? (Wooden stick, plastic fork and metal spoon) The wooden stick, plastic fork and metal spoon were put into a hot water. Expected answer: metal spoon, Why is the material a conductor of heat? Because most metals are a good heat conductor. Very Good! Conduction is a type of heat transfer through a direct contact. Part of the spoon is heated by contact with the hot water. The heat is transferred through the metal spoon, particle by particle, until the entire spoon is hot. What about the second picture? Boiling water on the kettle Which water in the kettle will go up? It is hot water or cold water? Hot water, because heat is being transferred from fire to a kettle. The reason why hot water will evaporate. Very Good, when you boil a water, it turns hot and its evaporating. The heat is transferred from fire to a pot. And this process is called convection. Where does heat transfer takes place in the situation? It is through the fluid movement currents. The hot water molecules become less dense and they rise above the denser cooler molecules. Fantastic, now who can describe me the last picture? Melting ice cream as the sun heats the ground What causes the ice cream to melt? I think, ice cream melt through the sun’s heat and through the warm air. What about the fourth picture? It is the sun heat the earth. Very Good. The third method of heat transfer we have Yes, we are. the radiation. Radiation is the fastest way of heat transfer. Due to this ice cream get the heat energy from the sun which is required to melt ice cream. Yes, ma’am. The factor or condition that is necessary for heat transfer to occur is that two object must have different temperature. Like what we have discussed earlier that heat Are we clear about the types of heat transfer? always flow or move from the hotter object to the cooler one. Alright, since we know already the types of heat transfer did you already understand what is the condition for heat transfer to occur? Very Good! • Application I want you to look under your table. Each table indicated the picture that describe the methods of heat transfer. Now, I want you to identify what is in the picture and what type of heat transfer is that. IV. Assessment/ Evaluation Direction: Write Conduction, convection or Radiation in the blank space to show the type of heat transfer. 1. ______ Hot water rises and cold-water sinks Stir frying vegetables 2. ______ 3. ______ A spoon in a cup of hot soup becomes warmer 4. ______ Grilling hamburger over a charcoal flame 5. ______ Hot air balloon rises V. Assignment Draw a picture/scenario that describe the 3 methods of heat transfer and put a label on it. Write, it in your notebook.
