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OverviewWhat do flagpoles and some window blinds have in common? They use pulleys to perform work! Pulleys are simple machines. They help us to do jobs more easily. But don't take our word for it. Put pulleys to the test with the fun experiments you'll find in th Full Product DetailsAuthor: Sally M Walker Feldmann , Roseann Walker FeldmannPublisher: Lerner Digital Imprint: Lerner Digital ISBN: 9780761382089ISBN 10: 0761382089 Pages: 40 Publication Date: 01 July 2011 Audience: Children/juvenile , Children / Juvenile Format: Electronic book text Publisher's Status: Active Availability: Available To Order ![]() We have confirmation that this item is in stock with the supplier. It will be ordered in for you and dispatched immediately. Table of ContentsReviewsAuthor InformationTab Content 6Author Website:Countries AvailableAll regions |