At first it looks a bit like a ping-pong ball with with two small metal strips on it. But when you touch both strips at the same time, the ball begins to flash and make a cool, somewhat spooky, sound. The best part is that it works because humans conduct electricity. The sweat in your body reacts with the metal to create an electrical current.  Try it with three people, 20 people, more? Teaches about circuits, electrical conductivity, and chemical reactions to trigger a flow of electricity. For ages 6 and up.

How many people can conduct electricity to power the Energy Ball? To experiment, hold hands with a friend and then have each of you touch a metal strip on the energy ball with your others hands. The harmless electricity is flowing through both of you as the ball lights up. Now try it with three people, 10 people, 20 people, more? Let us know what you find out!