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Screws

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Description

Screws are simple machines used for many different jobs. The concept of a screw is used in snow blowers, drills, and presses. Kids will learn how screws work and how they are used in complex machines.

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Product Details

  • Aug 1, 2009 Pub Date:
  • 1626174784 ISBN-10:
  • 9781626174788 ISBN-13:
  • English Language
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