Every year on March 14, math lovers and pie enthusiasts come together to celebrate Pi Day. The date (3/14) matches the famous mathematical constant Pi (3.14), which represents the ratio of a circle’s circumference to its diameter. Pi pops up in all sorts of places, from calculating the size of planets to designing coffee mugs with quirky math jokes. The holiday was started in 1988 by physicist Larry Shaw at the Exploratorium in San Francisco and was officially recognized in 2009. Pi has been around for centuries, with ancient Babylonians and Egyptians using it long before Archimedes made his famous calculations. Mathematicians like Manil Suri and Daniel Ullman marvel at how this number keeps appearing in unexpected ways. The best way to celebrate? Bake a pie, eat a pie, or just appreciate the magic of math with some fun puzzles. March 14 is also Albert Einstein’s birthday, making it a doubly nerdy day to enjoy. Whether you're a math whiz or just here for the dessert, Pi Day is a fun reminder of how numbers shape our world!