Happy Pi Day!March 14th is the one day of the year that we celebrate mathematical constant π (pi). There are many ways to celebrate this day. You can bake pie in the shape of Pi or just cash in on the savings we’ve rounded up below.

Freebies:

Food:

Apparel:

  • An artistic approximation of Pi T-shirt $19.99 | ThinkGeek
  • Pi Day 2016 3.14.16 Round It Up Math Graph STEM T-Shirt $18 (Orig. $26) | Amazon
  • A Totally Irrational Tie $19.99 | ThinkGeek

Other:

Pi Day has been observed in many ways, including eating pie, throwing pies and discussing the significance of the number π, due to a pun based on the words “pi” and “pie” being homophones in English, as well as pies tending to be round, and thus related to π.

Massachusetts Institute of Technology has often mailed its application decision letters to prospective students for delivery on Pi Day. Starting in 2012, MIT has announced it will post those decisions (privately) online on Pi Day at exactly 6:28 pm, which they have called “Tau Time”, to honor the rival numbers pi and tau equally. In 2015, the regular decisions were put online at 9:26 AM, following that year’s “pi moment”.

The town of Princeton, New Jersey, hosts numerous events in a combined celebration of Pi Day and Albert Einstein’s birthday, which is also March 14. Einstein lived in Princeton for more than twenty years while working at the Institute for Advanced Study. In addition to pie eating and recitation contests, there is an annual Einstein look-alike contest.

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Pi day at thinkgeek


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