MathHappenings are public engagement events designed by the National Museum of Mathematics ( to celebrate the wonder and beauty of mathematics.

Fractal Fun at the World Science Festival

June 4, 2016 — The National Museum of Mathematics partnered with the World Science Festival and 144 volunteers to construct a giant glowing fractal! MoMath’s rainbow-colored lightsticks were used to create a human-scale Koch snowflake in Brooklyn Bridge Parkin what became the world’s largest-ever human fractal demonstration.


A Random Walk on Wall Street

May 11, 2016 — Dice rolls, small steps, and a giant group march culminate in a surprising result: a huge human histogram showing the famous “normal curve” of statistics.


Solstice Stars

December 22, 2015 —MoMath together with the Flatiron/23rd Street/Partnership created another giant group celebration to commemorate the Winter Solstice with math and light. The group formed a heptagram — a seven-pointed star with angles just under 26 degrees, representing the highest angle the sun reached over New York City on Winter Solstice 2015. Read more at


Pythagorize Seattle

August 17, 2015 — Hundreds of Seattle-based math lovers flocked to Lake Union Park on Pythagoras day (8/17/15) to become part of the nation’s largest-ever human illustration of the Pythagorean Theorem. Read more at



Pi Day of the Century

March 14, 2015 — Hundreds of New Yorkers created two giant circles with MoMath’s signature glowing light sticks in order to discover the beautiful recurrence of pi among circles of all sizes. Then, a Pi Countdown clock ticked down the time until 53 seconds past 9:26 pm (that’s Read more at


Pythagorize the Flatiron

December 5, 2013 — Nearly 2,000 math enthusiasts demonstrated the Pythagorean Theorem using Manhattan’s Flatiron building and a truckload of light up glow sticks. Read more at