Strips of plastic on a globe model our atmosphere.

Construct a simple battery that can power a light.

This simple toy sounds like a swarm of bees.

Suspend an object in the air by blowing down on it.

A bicycle wheel acts like a giant gyroscope.

Build a rubber-band-powered rolling plastic water bottle.

Store up an electric charge, then make sparks.

Learn about simple circuits with a board you build yourself.

Build a cuíca—a musical instrument—and play with vibrations.

"Cold" metal and "warm" wood may be the same temperature.

Make a conductivity meter and let your electrolytes shine.

Create a convection cell inside a CD case.