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Who Invented the Wheel and Axle?
There’s no doubt in our minds that today’s Wonder of the Day will get you rolling!
Who Invented the Wheel and Axle?
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How Many Degrees Are in a Circle?
Do you ever feel like you’re going around in circles? Today’s Wonder of the Day is sure to make you feel that way!
How Many Degrees Are in a Circle?
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What Is Pi?
Pies are square? Join us in Wonderopolis today as we slice into a mathematical concept that will leave you hungry for more!
What Is Pi?