If you click on the link below it will take you to a game about electrical circuits. You can see how we write them in diagram form too using the correct notation. For my second years this applies to the little circuits we set up to test the conductivity of metals. We had a power source like they have the battery and instead of having a bulb light up we used an ammeter. Note how the circuit is complete - a full circle!!!! It all has to join continuously for the bulb to light. In our experiment the metal was placed between the 2 crocodile clips to complete the circuit and move the needle on the ammeter!! Have a go....good luck.
http://www.sciencekids.co.nz/gamesactivities/electricitycircuits.html
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