Wedges

by Valerie Bodden

Published 1 January 2011
"A foundational look at wedges, explaining how these simple machines work and describing some common examples, such as shovels, that have been used throughout history"--Provided by publisher.

Levers

by Valerie Bodden

Published 1 January 2011
"A foundational look at levers, explaining how these simple machines work and describing some common examples, such as crowbars, that have been used throughout history"--Provided by publisher.

"A foundational look at inclined planes, explaining how these simple machines work and describing some common examples, such as ramps, that have been used throughout history"--Provided by publisher.

Simple Machines: Screws

by Valerie Bodden

Published 2 February 2011
"A foundational look at screws, explaining how these simple machines work and describing some common examples, such as jar lids, that have been used throughout history"--Provided by publisher.

"A foundational look at wheels and axles, explaining how these simple machines work and describing some common examples, such as doorknobs, that have been used throughout history"--Provided by publisher.