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”

What is your favorite flavor of pie? Let us know on our Twitter or Facebook!