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Part of the "Work, Energy, and the Simple Machine" series. Explains principles associated with the lever, pulley, wheel, and axle, showing how they are related, as well as their differences. Includes examples of each in everyday use. Comes with teacher's guide and blackline masters.
United Learning, 1560 Sherman Ave., Ste. 100, PO Box 48718, Evanston, IL 60201, Phone: (888)892-3484, Fax: (847)328-6706, Email: info@interaccess.com, URL: http://www.unitedlearning.com, Remarks: A division of Discovery Communications
Available on VHS
Running time 10 minutes.
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