FossWeb Levers and Pulleys Module:

How Stuff Works

How Stuff Works is a great place to learn about the way all kinds of things function in the world. Learn about everything from guitars, to cruise missles to the cells in your own body!

Inventors Toolbox: The Elements of Machines

This site from the Boston Museum of Science includes photographs and information about the various forms of simple machines. After you review the photographs and information, you can travel to the Gadget Anatomy link and try to figure out which simple machines are used in a variety of common tools and gadgets.

Simple Machines

The Franklin Institute in Philadelphia maintains this simple machines page which includes images and text describing the various simple machines plus links to other related sites.

Work is Simple With Simple Machines

This site includes information and activities dealing with simple machines. The site provides links to other sites concerning simple machines.