Celebrate Pi Day!
It's the only holiday to honor a number: Pi Day, on 3-14, the beginning digits of the infinite, nonrepeating decimal expansion of pi = 3.1415926... As the ratio of a circle's circumference to its diameter, pi is irrational and transcendental--qualities sure to bring a twinkle to any mathematician's eyes. How are people celebrating Pi Day?
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In Rhode Island, the AMS will be holding their annual Who Wants to Be a Mathematician game with local high school students.
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How about some music? Here's Noam Elkies' composition, Steganographic Étude #1, based on the first 244 digits of pi, with an explanation.
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The Exploratorium in San Francisco hosts events every year
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National Council of Teachers of Math (NCTM) "Pi Day on Pinterest"
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Math Goodies offers lesson plans
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College and university math departments such as Princeton University, Missouri University of Science & Technology, Harvard University, University of Adelaide (Vine videos), and MIT have fun on Pi Day
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Raytheon's Math Moves U celebrates Pi Day. Make a pie!
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See Happy Pi Day video on YouTube. Dr Eugenia Cheng, from the University of Sheffield, explains what Pi is, what it's useful for, and demonstrates a trick to remembering it.
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Read more about Pi Day on AMS Blogs: The Pi Day Link Roundup of the Century, by Evelyn Lamb, Pi Day and Other Math Holidays, by Maya Sharma, and The Ubiquity of Pi Day: It’s Not Just for Math Geeks, by Edray Goins.
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Search Twitter for hashtag #PiDay to see lots more Pi Day celebrations around the world
If your math department celebrates Pi Day let us know!
Email the AMS Public Awareness Office

From The Self-Referential Cookbook: the first 13 digits of Pi (last displayed digit rounded).