Pi — it’s irrational and goes on forever! What is pi (π)? Why do we need it? This March 14, go on a math adventure with your child to learn about this special number. Read Sir Cumference and the ...

Pi Day is such a huge holiday that it's hard to imagine it didn't exist until 1988. The first party in honor of the amazing mathematical entity known as "pi" began that year when Larry Shaw, a ...

To most, pi is just some number: 3.1415926 … streaming on into infinity, a seemingly endless string of digits. Not so for writer/director Darren Aronofsky, whose debut film, Pi, deals briefly with pi ...

It’s Pi day! So what better way to celebrate than with games that involve the math of circles? On this most circular of days, we present three classic toys — hula hoops, yo-yo’s and Connect Four — and ...