Pi Day 2015

March 14, 2015 • 0:29

At the Exploratorium, Pi Day isn't just a day—it's a way of life. After all, we invented it! Experience this mathematical holiday (March 14 at 1:59 p.m., to be specific) any day of the year with this video featuring the annual Pi Parade, pizza-tossing lessons, and of course, a slice of pie for everyone who wants one. 

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