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Running Time:
01:53:32
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
Running Time:
00:27:55
It's geometry! It's knitting! It's—hyperbolic crochet! Artist and science writer Margaret Wertheim shows you how to represent a hyperbolic plane using crochet hooks and yarn. Beginning with a simple crochet chain, learn how to create a geometric shape with a constant negative curvature just by adding stitches.

Project: MAKE at the Exploratorium | Browse All

Date: July 14, 2007
Format: Demonstration / Activity
Category: Everyday Science
Subject(s): General Science, Art