Canizares, Susan,

Simple machines / Susan Canizares. - Markham, Ontario : Scholastic, c1999. - 1 v. (unpaged) : col. ill. ; 18 cm. - Science emergent readers .

Rhyming text and photographs explore the many tasks that can be performed by such simple machines as springs, ramps, and pulleys.

ISBN: 155268587x

Subjects--Topical Terms:
Simple machines
Simple machines.
Machinery.