1. To explore a circuit, click on one of the circuit buttons at the bottom of the screen. The circuit will appear in the Work Area.
2. Click on a switch to open or close that switch. When there is a complete path for electricity to flow through, the lights along that path will light.
3. In Circuit 5, you can change the resistance in the circuit by clicking on the Variable Resistance dial in between the two light bulbs.
4. To test a new circuit, click on another circuit button.
