Make a circuit by touching either the light bulb or My Kat to the batery. To make things more complicated, add wires to your circuit. I know you can't make complex circuits with the light and My Kat but I didn't have time to work out the glitches. One of which would include being able to pick up more than one object at a time (gets really annoying). Anyway, click and drag things around to make a circuit. This project may stink but it gets the concept across that when you touch a light (or cat) to a batery, it turns on. Everybody, feel free to improve on this!