Get to know levers /
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Get to know levers /

All people have jobs to do. Some jobs take a lot of energy. Simple machines help people get jobs done without working too hard. There are six kinds of simple machines: inclined planes, levers, pulleys, wedges, screws, and wheels and axles.

Bibliographic Details
Main Author: Volpe, Karen
Corporate Author: PALCI EBSCO books
Format: Online Book
Published: New York, NY : Crabtree Pub. Company, 2009.
Series:Get to know simple machines.
Access:Online version
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Table of Contents:
  • Levers make work easier
  • Parts of a lever
  • Catapult shooter
  • First class levers
  • Moving the fulcrum
  • Second class levers
  • Crack that nut
  • Third class levers
  • Small effort, big result
  • Levers for fun, too
  • All around you
  • Working together
  • Glossary.