Experimenting with batteries, bulbs, buzzers, switches and other electrical components is a great way to learn about circuits and start to think about how to incorporate sounds into your Build a ...

Assemble the circuit shown in the diagram. Match the leads on the transistor ... Discuss with your group the advantages you think transistor switches might have over mechanical switches.

This circuit diagram joins a cell, a switch and two bulbs. Click on the next slide to see what the circuit might look like if you built it. Image caption, This shows what the previous circuit ...