Simple machines : using simple machines to learn about forces, friction, work, power, and potential and kinetic energy / [written by Toni Albert ; illustrated by Michael Moon]

Bibliographic Details
Main Author: Albert, Toni.
Other Authors: Moon, Michael.
Format: Book
Published: Greensboro, NC : Carson-Dellosa Pub. Co., c1994.
Series:Step-by-step science series.
Item Description:Title from cover.
Physical Description:48 p. : ill. ; 28 cm.
Audience:Grades 4-6.