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Pulleys


Pulleys

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Item Number:
SM V6022
Price:
$19.95
Format:
DVD
     Click for VHS Format   
Length:
13 min.
Copyright:
2002
Closed Caption:
Yes
Producer:
Schlessinger Media
Grade Level:
3 - 6
ISBN:
1417100680
UPC:
753201110930
Summary:
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.

Only available in the US.


Series Name:
    Way Things Work, The



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