Happy Pi Day!

It’s Pi Day, which brings to mind a couple of things about which I’m pretty pleased. First of all, both of my kids are in a wonderful (and generally short) window of time. They know more digits of pi than...

A Week of Pi, Day 2: Pi Contests

Yesterday, we covered What Is Pi?  Now to do something with it. Not only is March 14th Pi Day, it's also Albert Einstein's birthday. With that in mind, Princeton Tour Company sponsors a Pi Day Video...

Pi Day: What Is Pi?

Pi Day is celebrated each year on March 14, or 3/14. This year, we're celebrating this famous number with a week-long series all about pi. Here is some background on pi: Pi is a constant that...

Happy Tau Day!

Over at tauday.com, Michael Hartl makes an impassioned argument for why pi, which is the universal circle constant that describes the ratio of a circle’s circumference to its diameter, was wrongly defined....