Model+circuits

Describe what an electric current is. Explain why models are useful to help us think about electricity. Describe how a central heating system is similar to a simple electrical circuit. Explain how an obstacle race can help us to think about resistance.
 * Objectives (what you will learn this lesson)**

Review homework / key term quiz
 * Starter**

> > media type="file" key="ES7_Jc140_05vvv.flv" width="360" height="270" > > > a. You have 5 minutes to complete your gapfill. > b. Switch with another group and look at what they've put, DON'T CHANGE IT. > c. Switch again and look at what a second group has done. > d. Now go back to your card sort and see if you can improve it. > e. Check with your teacher. > f. Make sure each person has a completed copy to stick into their books. > > //N.B. You may refer to your textbook for help// > > >
 * Activities**
 * 1) Look at why a switch works
 * 1) Take part in the roleplay to show how a circuit works
 * 1) Complete the card sort on [|Electricity and water] in groups of 3:
 * 1) Answer Q 6, 8 from p140-1 of Exploring Science 7
 * 1) Now have a go at completing [|Thinking about electricity 2]
 * 1) Extension: Review the central heating system cart sort and try to answer the questions on [|Thinking about electricity 3]

Review completed classwork / key term quiz
 * Summary**

Copy and complete the gapfill on [|Model circuits]. You can either complete on your computer and print or write in your book by hand.
 * Homework**