Put wheels and axles to the test /

What do bicycles, doorknobs, and screwdrivers have in common? All of them use wheels and axles to perform work! Wheels and axles are simple machines. They help us to do jobs more easily. But don't take our word for it. Put wheels and axles to the test with the fun experiments you'll find i...

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Bibliographic Details
Online Access:Electronic book from EBSCO
Main Author: Walker, Sally M.
Other Authors: Feldmann, Roseann.
Format: eBook
Language:English
Published:Minneapolis, MN : Lerner Publications Co., ©2012.
Series:Searchlight books. How do simple machines work?
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