
Yes, that's right, the ratio of the circumference of a circle to its diameter has its own national holiday. It is celebrated on March 14 (3/14, get it?). There's plenty of ways to celebrate, such as eating a pi-symbol-shaped pie, memorizing pi to a hundred digits, or calculating the circumfrences of circles like a crazed math geek.
More information on National Pi Day
So how many of you actually knew that tomorrow (or today) is National Pi Day? And are you actually going to do anything? In math class tomorrow we'll do some special activites (that's how I found out about this).