Science Behind Superman's Speed

Science Behind Superman's Speed

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The Man of Steel can defeat nearly any enemy with his super-strength. But what is strength and what makes it possible? Can anyone or anything in the real world match Superman's muscles? Get ready to explore and learn about the amazing science of strength alongside the World's Greatest Hero.
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Ages: 5-7
Read time: 5-20 mins
AR LEVEL: 4.1
LEXILE©: 740L
Ages: 5-7
Read time: 5-20 mins

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