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Did you use a fork today? Then you’ve used a lever! These simple machines are all around. Take a look inside and discover 13 different ways we use levers.
Wiley Blevins is an author living in New York City. He has written more than 75 books for children and 15 for teachers. He taught elementary school in both the United States and South America, and has recently been in TV commercials for a children's television channel in Korea.
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