| CDN Pub Library: | $19.95 US (V6022CP) | | CDN School: | $29.95 US (V6022CS) | | CDN Board/District: | $69.95 US (V6022CB) |
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| Grades: | 3 to 6 | | | | | Runtime: | 13 minutes | | | | | Item #: | V6022 | | | | | Availability: | In Stock! | | | | | Format: | DVD | | | | | Also Available In: | | | | | | Closed-Captioning: | Yes |
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PRODUCT SUMMARY
For sale in U.S. and Canada only-- In Pulleys, inhabitants of Mammoth Island try to find the best method to lift their mammoths. A young islander, Olive, decides to use a simple machine called a pulley to get the job done. A pulley is a wheel that carries a rope, chain or cable on its rim and can be used to lift a heavy load. And when multiple pulleys work together, they lessen the effort it takes to do work. So, using a ten-pulley system would require one-tenth of the effort of a single pulley to lift a mammoth! Part of the multivolume The Way Things Work DVD Series, based on the best-selling book by David Macaulay. A teacher's guide is included and available online.
EDITORIAL REVIEWS
"The series is humorous, informative and very educational. Explanations are clear and relevant, with neccesary diagrams to explain exactly how things work...These are exceptional physics videos that merit a place in all educational collections."- School Library Journal (August 2003)
