- Piday.org
Official website celebrating the mathematical number pi, usually calculated to three digits 3.14 and celebrated on March 14 (3/14) every year.
www.piday.org
- Wikipedia: Pi Day
Information about the day devoted to the number pi.
en.wikipedia.org/wiki/Pi_Day
- MathForum: Pi Day
For the celebration of Pi Day in class. Includes problems of the week, literature connections, and online resources.
mam2000.mathforum.org/t2t/faq/faq.pi.html
- Pi Approximation Day
22/7 on the Aneristic Calendar. In U.S. notation, this is rendered as 7/22.
www.dtek.chalmers.se/~d3rebas/humor/piapprox.html
- Slice of Pi, Anyone?
About Pi Day and the transcendental number, by John Shepler.
www.johnshepler.com/articles/piday.html
- 123Greetings.com: Pi Day
Online greetings in celebration of Pi Day.
www.123greetings.com/events/pi
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