MoMath is the National Museum of Mathematics and they have a yearly hackathon where people make exhibits using their SDKs. One of the SDK’s allows you to control the giant touch screen on the floor that kids are usually running around on.

Our entry, Vortexpool, came in second in the hackathon. It simulates a vortex for each person it detects on the floor. The link takes you to a demo in the browser (click to create a vortex and click again to remove it)! Its a bit laggy on mobile so try it on a computer!

Link: https://katbug.github.io/momath-vortexpool/