Pi Day | March 14 Annually

Pi Day is a fun holiday meant to celebrate the mathematical constant of Pi, or π. The event is observed each year on March 14, which is taken from the first three digits of Pi: 3.14. Pi Day was recognized by the U.S. House of Representatives in 2009 and UNESCO has designated Pi Day as the International Day of Mathematics in 2019. Shop funny Pi Day t-shirts here for math fans!

Pi 3.14 First 2,000 Digits of Pi Math T-Shirt for Pi Day – This apparel is printed using the actual first 2,000 digits of Pi. Pi Day is celebrated on March 14th all around the world. Pi is the... View on Amazon
Pi Day Python Math Teacher Pun Nerd Pithon T-Shirt – Pi Day Python Math Teacher Pun Nerd Pithon. View on Zazzle
Pi Spiral Novelty Math Geek 3.14 Pi Day T-Shirt – Celebrate Pi Day in style on March 14th. Fun nerdy geeky math pi day gift for math majors, math teachers, science nerds, math geeks, math club... View on Amazon
Pi Day Circle Symbol 3.14 Digits Of Pi Math T-Shirt – Pi Day Circle Symbol 3.14 Digits of Pi Math View on Zazzle
National Pi Day Shirt Math Teacher T Shirt Pi Atom T-Shirt – National Pi Day Shirt Math Teacher T Shirt Pi Atom is a funny teacher tshirt perfect for a mathematics geek, a numbers nerd, math lover or... View on Amazon
Pi Day Heart Symbol 3.14 Digits Of Pi Math T-Shirt – Pi Day Heart Symbol 3.14 Digits of Pi Math View on Zazzle
Pi Day Symbol 3.14 For Math Teachers T-Shirt – Pi Day Symbol 3.14 For Math Teachers View on Zazzle
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I Ate Some Pie And It Was Delicious Math Pi T-Shirt – Lightweight, Classic fit, Double-needle sleeve and bottom hem. View on Amazon
Pi Day Symbol For Math Teachers T-Shirt – Pi Day Symbol For Math Teachers View on Zazzle
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Pi Day Symbol 3.14 Digits Of Pi Math T-Shirt – Pi Day Symbol 3.14 Digits of Pi Math View on Zazzle
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Pi Day Symbol 3.14 Digits Of Pi Math T-Shirt – Pi Day Symbol 3.14 Digits of Pi Math View on Zazzle
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Funny Too Much Pi Or Pie Can Give You A Large Circ T-Shirt – Funny Too Much Pi Or Pie Can Give You A Large Circumference View on Zazzle
Cool Math Teacher Pi Digits T-Shirt – Lightweight, Classic fit, Double-needle sleeve and bottom hem. View on Amazon
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Happy Pi Day T-Shirt – Happy Pi Day & My Birthday Math Nerd Geek Novelty Pun View on Zazzle
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