Term 3 Topic 4 Heat loss and gain IntroductionThe learners are reminded that they had already learnt in topic 3 that heat energy is transferred from warmer objects to cooler objects through convection / conduction / radiation.Teacher Input 1Greet the learnersLet the learners picture life without jerseys and blankets in winter; a fan in summer; flasks to keep their water / coffee warm; hot water to wash; etc.Show the flask, jersey, blanket, fan, etc. [concrete apparatus].Let them touch the items and describe each one [colour, material, texture, etc.].Ask if they will be able to function normally without the items described above.Ask the learners how can you use energy responsibly and efficiently.Show Video clip 1: Energy Saving. [3:43 min.].Present an overview of heat loss and heat gain by using Presentation 1: Heat loss and gain.Learner Activity 1Learners watch the video clip attentively.Learners respond to the questions when the teacher pauses a slide.The learners will think, reason and share their answers.Complete WORKSHEET A: Heat loss and gain.Teacher to use WORKSHEET A: Memorandum to mark the learners’ work.Teacher Input 2Ask the learners to name any insulation material that is known to them.Establish if the learners know how these materials prevent heat transfer.Let the learners give various examples at home, in nature and at school.Present an overview of using insulating materials by using Presentation 2: Using insulating materials [part 1].Divide the class into 4 groups [6 – 8 learners].Learner Activity 2The four groups discuss the following:Group 1 & 2: types of insulatorsGroup 3 & 4: materials that are heat insulatorsEach group chooses a scribe and someone to report back.Complete WORKSHEET B: Insulation and energy saving.Teacher to use WORKSHEET B: Memorandum to mark the learners’ work.Teacher Input 3Ask the learners if they had ever seen the pink “stuff” [glass fibre wool], that is placed in the ceilings.If possible, show them.Show Video Clip 2: Thermal Conductors and Insulators - select what is appropriate] [11:16 min.].Mention a season at a time [summer, winter, autumn, spring] and find out how it has an influence on the clothes that the learners wear. Show Video Clip 3: Inuit Video [2:16]Learner Activity 3Hand out WORKSHEET C: Insulation and energy saving [practical].Teacher to use WORKSHEET C: Memorandum to mark the learners’ work.Teacher Input 4Tell the learners that they will work in groups, discuss the following and report back:How liquids that we drink, are kept warm/cold.Water pipes [special coverings] and filling the wall cavities of buildings.Indigenous homes [how they are built, sealed, material used, etc.].Learner Activity 4Discussions in groups and report backShow Video Clip 4: GCSE Physics Revision: Vacuum flasks [2:52]Complete WORKSHEET D: Research Project [Indigenous homes of the Xhosa and Zulu].Teacher to use the assessment rubric of WORKSHEET D: Memorandum to mark the learners’ work.Give the learners an opportunity to present their project and display it in the classroom.Teacher Input 5Inform the learners that they will do QUIZ 1 investigating insulation principles.Show Video Clip 5: How to Demonstrate Insulation Principles | Science Projects. [4:46 min.].Learner Activity 5Learners watch video clip 5.Hand out QUIZ 1: Insulation and energy saving [visual activity].Teacher to use QUIZ 1: Memorandum to mark the learners’ work.Teacher Input 6Inform the learners that the revision activity is based on using insulation materials.Present an overview of using insulating materials by using Presentation 3: Using insulating materials [part 2].Revision Activity 1Complete QUIZ 2: Insulation, energy saving and energy transfer to the surroundings Teacher to use QUIZ 2: Memorandum to mark the learners’ work. By Administrator|2018-02-22T09:14:22+02:00February 22nd, 2018|0 Comments Share This Story, Choose Your Platform! facebooktwitterlinkedinredditwhatsapptumblrpinterestvkEmail About the Author: Administrator Leave A Comment Cancel replyYou must be logged in to post a comment.