TGS math students celebrated a very special day in the history of the universe: March 14, 2016–otherwise known as 3.14.15. These are the first five digits of the mysterious and powerful number that ancient Greek mathematicians called “pi.” Students brought lots of delicious pies but Mrs. Crosby didn’t allow them to eat any until they successfully calculated the area and circumference of an 8″ pie. (In case you’ve forgotten, the circumference of a circle is pi times the diameter and the area is pi times the square of the  radius.)