Just place one hand on the top silver bar and the other hand at the bottom, and voila, the LED lights flash while the buzzer buzzes! Youve just closed the circuit, allowing electricity to flow from one hand, thru the tube, thru your other hand and your body. Learn about electricity, circuits, conductors, electrons and more.
Dimensions: 4 x 9.75 x 1.5 inches
By TedCo
Ages 6+