PPHM hosted a near-infinite variety of Pi Day activities on the East Lawn Saturday to celebrate the number.

Pi, the mathematical constant that begins with 3.14 and goes on forever, is celebrated every year on March 14. Inside Bangin’ ...

The March 14 celebration drew toddlers through older children for a full day of circle-themed math activities and edible rewards.

Saturday is Pi Day, a national celebration of the mathematical concept, which is the ratio of a circle's circumference to its ...

Explore the origins of Pi Day from San Francisco's Exploratorium to global recognition, blending math, culture, and pie in a ...

Pi Day is here once again, giving you the time to ponder the mathematic phenomena with a slice of pizza or pie. Here's where ...

No need to be a math genius to enjoy National Pi Day! Celebrate with delicious deals on pies, pizza, and other fun offers.