Pi Day was first celebrated in 1988 at San Francisco's Exploratorium, a museum of science and technology that encourages visitors to be hands-on.

SAN FRANCISCO -- Every March 14, mathematicians ... charismatic number like Pi ... there's a lot to explore." Scientists knew for centuries that, regardless of the size of a circle, the ...

WEST PALM BEACH, Fla. (AP) — Math enthusiasts around the world, from college students to rocket scientists, celebrate Pi Day, ...

Each year, on March 14, it's become traditional for numerophiles and mathematicians to pause and reflect on the most famous ...

Pi, which is the ratio of a circle's circumference to its diameter, is celebrated with its own holiday on March 14.

March 14 is Pi Day, an annual celebration of the mathematical constant of pi, representing the ratio of a circle's ...

For two days only, on March 13 and 14, CPK Rewards members can get an Original BBQ Chicken, Pepperoni, or Traditional Cheese ...

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

Celebrate Pi Day on March 14 with math enthusiasts worldwide, honoring the infinite and practical uses of the mathematical ...

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Kwik Trip is offering a Pi Day deal on March 14 where rewards members can buy snack pies for $0.314. National Pi Day celebrates the mathematical constant π, the ratio of a circle's circumference to ...