March: Pi Day π

“If you wish to make an apple pie from scratch, you must first invent the universe.” – Carl Sagan

Pi Day was first explained to me in my high school calculus class. My teacher Ms. Hall was the sweetest little old lady who was we saw as a surrogate grandmother; she ran the student knitting club and the junior prom committee, and always found a way to make math fun. Pi Day comes from the first several digits of the never-ending Greek letter used to measure a circle, and so 3.14159 transformed into 3/14 and Pi Day was born. Every year, Ms. Hall would order for several dozen apple pies, load up her little Volvo wagon, and drive very slowly and carefully to school on March 14 to inspire a bunch of girls with math.

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