How Do You Lift a Lion?
How do you lift a lion? With a machine that's big and powerful with clanking metal parts? There are machines like that. But others have only a few moving parts. In fact, some machines are so simple that they don't seem like machines at all--like the wheel, the lever, and the pulley. These machines can make work easy--even if you're trying to lift a lion!
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About the Author
Robert E. Wells is the author and illustrator of Why Do Elephants Need the Sun?, What's So Special about Planet Earth?, Can We Share the World with Tigers?, and several other award-winning science books for children. He lives with his wife in Wenatchee, Washington.
Robert E. Wells is the author and illustrator of many award-winning science books for children, including Can You Count to a Googol? and Why Do Elephants Need the Sun?. He lives with his wife in Washington.
The Horn Book Guide
"A basic introduction to levers, wheels, and pulleys."
School Library Journal