<p>Presents instructions for creating a variety of items, including a pinhole mirror, a hydraulic arm, a modulated coil, and a periscope with a twist.</p>

Square Wheels and Other Easy-to-Build, Hands-On Science Activities (An Exploratorium Science Snackbook)

Rathjen, Don

Exploratorium Teacher Institute (San Francisco, Calif.)

Doherty,Paul

Children's Books

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Books by Exploratorium Teacher Institute (San Francisco, Calif.)

See the best price to sell, buy, or rent books by Exploratorium Teacher Institute (San Francisco, Calif.). BookScouter helps to compare book prices from 25+ online bookstores and 30+ buyback vendors with a single search.

Square Wheels and Other Easy-to-Build, Hands-On Science Activities (An Exploratorium Science Snackbook)