Flowing electricity

We use electricity to make all sorts of things work, without really knowing what's going on. One important hint about the nature of the electrical connection comes when we notice that an electrical plug has at least two prongs. Just as a road has two lanes so that cars can come and go, the wire has two strands so that electrical current can come to the device and then return to the power source. It suggests that something is flowing in the wire.

Various electrical devices.
a buzzer, holder, a battery,
a light bulb, a motor,
wires with clip ends
All of these are in your kit

Main pages in this section Estimated time required Link to activities in
teacher manual
Electrical current and simple circuits 30 minutes ..
Circuit diagrams 30 minutes ..
Make a switch 30 minutes Current #3
Science content: about batteries and circuits 45 minutes  
Discussion of electrical current 45 minutes  

Materials needed for this section

*Provided in the kit

Another page you might find interesting:
Why study electrical current?

Next section:Direction of current