Pi Day gives kids a lot to play with
SAN FRANCISCO--If ever a mathematician could be excited about a date, today would be it.
That's because it's Pi Day, March 14, or, for you Americans, 3/14. And since pi--the ratio of a circle's circumference to its diameter--is casually said to be 3.14159, today's the big day.
That's why I spent a big part of my day at the Exploratorium here for the science museum's 20th annual Pi Day celebration.
The brainchild of longtime Exploratorium employee Larry Shaw, the day's festivities celebrated the popular irrational number with a series of pi-related … Read more