Pi Day 2009: Activities, Links, and Plenty of Pi Songs

If you're still longing for the mathematical high you felt on Square Root Day last week, the wait is almost over: This Saturday, March 14, is National Pi Day. Ready to break out your calculator and celebrate? Pi ... continue

Square Root Day: Win $339 For Being a Math Maniac

It's Square Root Day 2009! For you non-geek types, that means the current month and date add up to the year: 3/3/09. Don't downplay the significance, either--Square Root Day happens only nine times per century. Square Root Day ... continue