Analogies help understand Electrical Circuits. It is easy to show that if unlike charge attract, when you separate them chemically, through friction or by using a moving magnet, they then try to get back together.
Wires create an easy path for charge and it is possible to imagine electrons as trail of ants.
Getting Voltage, Current and Resistance requires a little more.....
The best role play is have students as conductors and resistors and join up as a circuit. The +ions are paper tokens that are passed around the circuit. At the start of the battery the voltage of the charge is written (eg 10 V) they are passed through conductors at a rate so they don't accumulate. Resistors are rated in Ohms, in modern symbols (eg R10 means that if +ions are rated 10 V and drop to 0 V they will pass at the rate of 1 a second)
Role play will explore series and parallel configurations. - Sequence
- leader organize role play.
- Write understanding
- Construct Circuits and record on Excel after Quality control drill on components.
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