This is a hands-on activity in which students work in small groups and create series and parallel circuits. The worksheet guides them as they work through increasingly more complex circuits. You will have to drag them away from the equipment because they like it so much. Lots of experimenting going on outside of the directions. Equipment needed includes small gauge wire, light bulbs, batteries, solar cells and DC motors. These can be purchased from school supply companies like Kelvin, and used year after year and for other activities.