Special | 28m 49s Video has closed captioning.
Simple machines include the lever, the inclined plane, the wedge, the pulley, the wheel and axle, and the screw. Combine these and you can create almost anything to make work easier. In this Science Trek, host Joan Cartan-Hansen and her guest scientists John Gardner and Kathryn Devine answer students’ questions about simple machines. Woody Sobey of the Discovery Center of Boise joins in.
Problems Playing Video? | Closed Captioning