Category Archives: Pi Day

How Pi Day Became America’s Biggest Math Holiday

(Credit: Geralt/CCO/Flickr)

A holiday associated with a math constant may not seem very exciting. But Pi (“π”) Day, observed annually in the US on March 14 (3/14), is an exception. That’s because the celebrations may start with math activities centered around pi — the ratio of the circumference of a circle to its diameter, widely recognized as 3.14. But they inevitably end with a slice or two of delicious pie!

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