Pi Day is a celebration of the mathematical constant π, or Pi. It is observed today because when the date is written out in month/date format, it shows the first three significant digitals of Pi: 3.14. If you have a sweet-tooth, check out these four videos so that you can celebrate Pi Day with real pie!
“The sweet science of baking pie” – (above)
“Learn Pi’s digits with this irrationally long song”
“Understand Pi with Pie”
“A recipe for pie since isn’t a pi-party without pie”