On May 4, 2019, the biannual National Math Festival took place in Washington, D.C. I was fortunate to host a large area with Geometiles as part of the National Museum of Mathematics exhibit. There were about 12,000 attendees at the festival, and our tables were full of people for the entire duration of the festival (actually, past closing time… the security guard had to ask families to go home).
To be in the nation’s capital, surrounded by dozens of cultures and languages, all there because of a desire to explore math in a playful way, was an experience like no other. I was touched that so many people volunteered to make this event possible: from high school students, to teachers, to professors, to retirees. These pictures, taken mostly by Zdenka Guadarrama, tell some of the stories better than words.