Mighty MachinesBook - 2004
Answers basic questions about simple machines such as levers, axles, wheels, wedge and pulleys and provides simple activities and experiments designed to show how these machines work.
Publisher: New York, NY : Sterling Pub., c2004
Branch Call Number: J 621.8 Lev 3558jv 1
Characteristics: 48 p. :,col. ill. ;,21 cm. --