14.3.07

Pi Day


"Pi Day and Pi Approximation Day are two unofficial holidays held to celebrate the mathematical constant p (Pi). Pi Day is observed on March 14 (3/14 in American date format), due to pi being equal to roughly 3.14. Sometimes it is celebrated on March 14 at 1:59 p.m. (commonly known as "Pi Minute"). If pi is rounded out to seven decimal places, it becomes 3.1415926, making March 14 at 1:59:26 p.m., "Pi Second". Pi Approximation Day may be observed on any of several dates, most often July 22 (22/7—in European date format—is a popular approximation of p). March 14 also happens to be Albert Einstein's birthday(...)"

From Wikipedia, the free encyclopedia (14.03.07)

Mais informação:
piday.org - the official website for pi day
How to Celebrate Pi Day @ wikiHow - The How-To Manual That Anyone Can Write or Edit
Urban Dictionary: pi day
Pi Day @ MATH WITH MR. HERTE
Pi Day @ The Exploratorium
Math Forum
Pi Day songs @ Winternet
Pi Day Resources @ Mathematics Educators of Greater Saint Louis @ Missouri Botanical Garden

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