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What is Pi Day and why do we celebrate the holiday?
Pi Day was first celebrated in 1988 at San Francisco's Exploratorium, a museum of science and technology that encourages visitors to be hands-on.
Pi Day mates math with pizza, dessert
Indiana once tried to define pi as 3.2; the bill almost passed
Couples to wed at Philly pizza shop for Pi Day
Free pie for Pi day
More Stories
Pi Day mates math with pizza, dessert
Indiana once tried to define pi as 3.2; the bill almost passed
Couples to wed at Philly pizza shop for Pi Day
Free pie for Pi day