Levers play an important part in all our lives! Without them we could not row a boat, move a wheelbarrow, or open a bottle. This book teaches children about the different kinds of levers. Simple and easy-to-follow layouts and diagrams explain how levers lift turn, grip, and cut.

Get to Know Levers 2009, Crabtree Publishing Company, New York, NY

ISBN-13: 9780778744672

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Get to Know Levers 2009, Crabtree Publishing Company, New York, NY

ISBN-13: 9780778744849

Trade paperback

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