The Exploratorium is temporarily closed. Explore our online resources for learning at home.
Meet Exploratorium physicist Larry Shaw, the originator of Pi Day.
Learn about π, π Day history, and play with π activities.
It may be hard to cut pie into equal pieces, but in this Snack, you can cut string into pi pieces!
Asked to get an estimate for the famed mathematical constant pi (π), try the random tossing of toothpicks.
Use a touchscreen to search for any number hidden in the first 3 million digits of pi.
Toss some chips to estimate pi.
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