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Book #1 · Chapter Book · Ages 6–9 · 2007
Pulleys to the Rescue
Discover how pulleys make the impossible possible.
24 pages· 628 words· Est. 7 min read
Library Binding
Summary: Explore the fascinating world of pulleys, the simple machines that make lifting and moving heavy objects possible. From raising flags to operating cranes, uncover how pulleys save the day.
