Pi Day
Videos
Pi Day is an annual celebration of the mathematical constant π with events mostly in the United States. Pi Day is observed on March 14 since 3, 1, and 4 are the first three significant figures of π an
Larry Shaw, the organizer of the first Pi Day celebration, at the Exploratorium in San Francisco
Pi Day related offering at Delicious Orchards, a country food market in Colts Neck, New Jersey
NSF employees celebrating Pi Day with a pie competition
A grocery store selling pies for $3.14 on Pi Day, 2015