Does anyone know why Vihart took all their videos down on youtube? I was looking to show one of the pi-day ones, but saw they are all gone but one :(

Does anyone have any cool ideas for the @desmos.com art contest? My only idea was to make a Geoboard manipulative to help students explore Pick's Theorem for triangles but I'd like to do something more interesting. #MTBoS #iteachmath
www.desmos.com/calculator/p...