3.14159265359 ... Pi day (March 14)
Come to the Math Side T-shirt
Forget the dark side and their cookies, the math side has pi.
Pi Hole Spatula
Misha Collins’ spatula for No Kid Hungry charity is just what SPN fans need to make all those apple pies.
3.14 mile Virtual Race
An Albert Einstein/Pi day 3.14 mile (5k) virtual race.
Pi Math Adventure Book
Follow the adventures of Sir Cumference, Lady Di of Ameter and Radius in this series for students.
Some, but not all of these items are through affiliate links.