Key concepts Physics Simple machines Wedges Air pressure Introduction Looking for a cool and surprising project to show to your friends? Give this activity a stab! Take a potato and a straw ...

In this project you will use simple household materials to explore one of these classic machines: the pulley. Background Pulleys are simple machines that can make the job of lifting objects easier.

Find out how simple machines makes work easier on this Science Trek. Simple machines include the lever, the inclined plane, the wedge, the pulley, the wheel and axle, and the screw. Combine these ...

Ever wondered if you could make a welding machine at home using just AA batteries? In this video, I’ll show you how to do exactly that with a simple, step-by-step guide. This easy and practical ...