Pi Day is observed on March 14 (the 3rd month) since 3, 1, and 4 are the first three significant figures of ?. It was founded in 1988 by Larry Shaw, an employee of the San Francisco science museum, the Exploratorium. Celebrations often involve eating pie or holding pi recitation competitions.

HOW TO OBSERVE NATIONAL PI DAY
Celebrate the day with a slice of a pie cut using the mathematical constant of pi.
Host a pie-eating contest.
Discuss the significance of the number ?.
Watch the Life of Pi.
Look for 3.14 in unexpected places. For example, prices, street numbers, or license plates.
Finding 3.14 deals in as many versions of ? as possible. For example Think pizza Pi as much as dessert kind of deals on this day! Get punny Geeky Greek Pi-inspired t-shirts deals. Visit the National Day Calendar Classroom for a National Pi Day lesson.
Use #NationalPiDay to post on social media.

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