Scientific American spoke to Rojas about this history, the deeply engaging humanity of mathematics and the egos at play in defining the mathematical language we take for granted today.

Math fanatics from all around the world and everyone else who just loves ancient Greek pi (or pie) celebrate on March 14.

When is National Pi Day 2025? What to know about Pi Day activities for kids, songs, movies, jokes, deals, snack ideas and more.

Pi Day I Spy is a fun way to celebrate March 14th while reinforcing number recognition and counting skills. Kids will search for digits of Pi, spot math symbols, and sharpen their observation ...

Pi Day rolls around every year on March 14. It is observed on March 14 because 3, 1, and 4 are the first three significant figures of π, making the date (3/14) a perfect match to honor the ...

The holiday commemorates a timeless symbol beloved by many in mathematical and scientific communities, while making the most of the opportunities it allows for humorous wordplay, dessert and ...