Video

Masks are required for all visitors 2+. Vaccines recommended. Plan your visit  

Visitor FAQ Buy Tickets Donate Today
Cutting Pi
Pi Day 2015
A Taste of Pie!
Pi Day Celebration

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. These videos capture Pi Day through the ages.

Episodes
Pi Day

Pi (π) Day Celebration with John Sims

Published:   March 14, 2022
Pi Day

When Pi isn't Enough

Published:   March 8, 2021
Total Running Time:   00:08:20
To celebrate Women's History Month and the Exploratorium's favorite holiday—Pi Day—we’ll highlight some of the...
Pi Day

Pi is Women's Work: Celebrating Women in Mathematics

Published:   March 4, 2021
Total Running Time:   00:10:26
Pi Day

Pi: the Story of an Extra Little Bit

Published:   February 27, 2021
Total Running Time:   00:18:50
Pi Day

Why Pi?

Published:   February 24, 2021
Total Running Time:   00:20:00
No matter how you slice it, you won’t want to miss Pi Day—we’ll be celebrating differently this year, but you can...
Pi Day

Pi (π) Day “Round” Table + Listening Party

Published:   February 19, 2021
Total Running Time:   00:45:00
Pi Day

Pi Day 2020: Why π?

Published:   March 14, 2020
Total Running Time:   01:30:00
Pi Day, Science Snacks

Cutting Pi

Published:   February 26, 2020
Total Running Time:   00:01:17
Pi Day

Pi (π) Day 2020

Published:   February 11, 2020
Total Running Time:   00:00:30

See all videos