What is pi? “pi—which is written as the Greek letter for p, or π—is the ratio of the circumference of any circle to the diameter of that circle”
If you want to know how pi originated click this Scientific American article

Rob this post is for you. Rob is a certified Pie Judge. Here’s a post of National Pie day in January 2012. Sorry I missed National Day Pie Day this year but now it’s Pi Day 3.14.
Did you know you can order Pi Day sock yarn? maybe for next year Fibernymph Dyeworks says “ all of our Pi Day colorways, the striping pattern is based on the numeric sequence of pi – 3.141592…, which is a non-repeating number. Thus, the stripe sequence does not repeat within the skein, and you will not be able to get a matching pair of socks (or anything) from a single skein. But if you’re a math geek, that’s part of the fun! We include a stitch marker affixed to the beginning of the sequence”
Pi Day at high school was celebrated in 2015
