This award-winning, hands-on educational tool will amaze your young scientists as they experiment with open and closed circuits. When students touch the electrodes on each end of the cylinder at the same time, LED lights flash and the tube makes noises. Take it to the next level with more than one person. When two students hold the Energy Stick® and their partner's hand, they complete the circuit and activate the stick. Keep adding students until everyone is holding hands and creating a great big circuit. With this set of four fascinating little sticks, your class can experiment in groups as they discover circuits, insulators, conductors, and even the impact of working together.