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Part of the "Work, Energy, and the Simple Machine" series. Offers comparison of three simple machines: inclined plane, wedge, and screw. Demonstrates each type and provides examples of where each one is used. 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 7 minutes.
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