More about the Exploratorium website: Pi Day | ||

Pi = 3.14159 (and an infinite number of decimal places after that). Pi Day, which is celebrated on 3/14 at 1:59 p.m., is an international holiday that was born at the Exploratorium. Watch some Pi Day celebrations. |

Browsing 0 - 5 results of 5 programs from project - Pi Day |

Meet Pi Day founder Larry Shaw, and join hosts Ron Hipschman and Lori Lambertson to find out what’s so special about pi—the irrational number that results from dividing the circumference of a circle by its diameter. Learn the history of pi and how pi is calculated, be entertained by pi limericks, and see a cool pi demo. Pie.

**Project:** Pi Day | Browse All

**Date:** March 14, 2012

**Format:** Demonstration / Activity

**Category:** Everyday Science

**Subject(s):** General Science

**Keywords:** pi day, 3.14

Celebrate Pi Day— an international holiday born at San Francisco’s Exploratorium. Join us for a live webcast where we examine the nature of everyone's favorite mathmatical constant, 3.1415926535…ad infinitum!

**Project:** Pi Day | Browse All

**Date:** February 5, 2010

**Format:** Event

**Category:** Science in Action

**Subject(s):** General Science

**Keywords:** pi

Celebrate Pi Day— an international holiday born at San Francisco’s Exploratorium. Join us for a live webcast where we examine the nature of everyone's favorite mathmatical constant, 3.1415926535…ad infinitum!

**Project:** Pi Day | Browse All

**Date:** March 14, 2009

**Format:** Event

**Category:** Popular Science

**Subject(s):** General Science, Math

**Keywords:** pi, math, einstein, circle, radius

The Exploratorium celebrates the 20th anniversary of Pi Day with a pie-throwing contest, Pi Day exhibits in Second Life, and more activities honoring everyone's favorite mathematical constant.

**Project:** Pi Day | Browse All

**Date:** March 13, 2008

**Format:** Event

**Category:** Popular Culture

**Subject(s):** General Science, History

**Keywords:** pi day, geometry, history, math, chain reaction

3/14 at 1:59 pm
It's also Einstein's Birthday
From San Francisco to New York, in museums, universities, classrooms and in
the privacy of one’s own home - and of course on Second Life - people are
celebrating Pi. In 2008, we celebrate the 20th anniversary of Pi Day, an
international holiday born at San Francisco’s Exploratorium.

**Project:** Pi Day | Browse All

**Date:** February 20, 2008

**Format:** Event

**Category:** History of Science

**Subject(s):**

**Keywords:** pi day

Links: | Press Release: 20th Anniversary of PI Day March 14, 2008 |

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