Simple text, illustrations, and hands-on activities introduce children to simple machines, discussing wheels and axles and describing their parts and different uses. Connects to the grade 2 science unit on movement.
Details
ISBN: 077874471X
ISBN: 0778744884
ISBN: 9780778744719 (lib. bdg. : alk. paper)
ISBN: 9780778744887 (pbk. : alk. paper)
Physical Description:32 p. : ill. (chiefly col.) ; 29 cm.print
Publisher:New York : Crabtree Pub., c2009.
Bibliography, etc. Note: Includes bibliographical references (p. 32) and index.
Formatted Contents Note: What is a simple machine? -- The basic design -- How it works -- Round and round -- Moving loads -- A muli-axle model -- A lifting machine -- Build a lifting machine -- Wheels and axles in action -- The fan in action -- Fighting friction -- Creating friction -- Working together -- Glossary.