OK, you have to be joking. So, in grade 8 I teach a math unit all about circles and of course all of the mathematical formulas to do with circles are based on Pi. You can't solve for the area of a circle or the volume of a cylinder without Pi. We learn all about the relationship between the diameter of a circle and the circumference which is where Pi comes from. It is irrational because the number of diameters or radii in a circle are essentially infinite and therefore Pi is never-ending. All that being said, at the end of the circle unit every year we celebrate with a Pi party. Students bring in a variety of pies and cakes (Cylindrical) and we spend the whole class eating pie. This year I even had a student make cookies with the Pi symbol and various formulas written on them. So much fun. I must admit though that I have never celebrated on the actual Pi day. I learned something new today. Thanks!
That’s cool that you have a party! Good math fun right there!