Simple Machines
Let's Read-And-Find-Out® Science-Level 2
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Simple machines help us move, lift, cut, and more!
In a fun way, this story highlights practical examples of familiar, everyday things: lever (seesaw), pulley (flagpole), wheel and axle (doorknob), ramp (stairs), wedge (axhead), and screw (spiral stairs).
Includes glossary, experiments, and further research. By D.J. Ward. Illustrated by Mike Lowery. Paperback, 38 pages. Ages 4-8.
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