This day only comes 'round' once every year!

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 ...

March 14 circles back on the calendar, and Pi Day gives Americans a reason to smile at math instead of stress over it. What started ... Read moreThe post Pi ...

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

One of my favorite holidays is Pi Day. On March 14, people who love the math constant called pi celebrate by eating the other kind of pie. Like apple pie, pumpkin pie and even pizza pie. I talked ...

Think about the first time you met pi, 3.14, an odd, never-ending number that links circles, clocks, and the cosmos.Pi fascinates us because it’s simple-to-define yet infinitely mysterious: ...

SAN FRANCISCO -- Every March 14, mathematicians, scientists and math lovers around the world celebrate Pi Day, a commemoration of the mathematical sign Pi. That's because the date written numerically ...

Pi isn’t just a term you see in math problems. It’s a special number with its own unique day. Pi Day is celebrated every year on March 14 because the date aligns with the first three digits of pi – ...

Some numbers are useful. Some are famous. And then there is pi, a number so absurdly powerful that humanity has spent ...

Divide the circumference of a baseball by its diameter and you get 3.14. Divide the circumference of Earth by its diameter and you get 3.14. Divide the circumference of a pizza, coin or, well, pie and ...

Happy Pi Day, the annual celebration of this incredible, mysterious, and irrational mathematical constant. Okay, so Pi — most commonly written as the Greek symbol π — is an essential mathematical ...