Outside the US, Pi Day should probably be July 22 (22/7)—this fraction is a surprisingly good estimate of pi. You can find the value of pi with a mass and a spring.

Learn about the definition of pi in relation to a circle with this BBC Bitesize Maths article. For students between the ages of 11 and 14.

Every year, the celebration of Pi Day (March 14 is 3.14) grows more ambitious. Math teachers love to dream up unique classroom activities to celebrate Pi for it endless opportunity to calculate (3 ...

In other words, by cutting pi off at the 15th decimal point, we would calculate a circumference for that circle that is very slightly off.

Pi has been calculated to an astonishing 62.8 trillion figures by a team of Swiss scientists who spent 108 days working it up - 3.5 times as fast as the previous record. The previous record was ...

Happy Pi Day, fellow nerds! The yearly celebration of the mathematical constant π or pi, aka the ratio of a circle’s circumference to its diameter (and here I thought I’d never get a chance ...

Needles falling on paper will calculate pi, everyone’s favourite mathematical constant, on the day that bears its name. Pi day is 14 March, or 3.14 as Americans might write it. The constant ...

Swiss researchers said on Monday they had calculated the mathematical constant pi to a new world-record level of exactitude.

Saturday is the day when love of math and a hankering for pastry come full circle. It's Pi Day, a once-in-a-year calendar date that this time squares the fun with a once-in-a-century twist.