Here are a few examples from our recent January 2017 session – showing off a visual of multiplication by 2, 4 and 7 respectively!
And here are a few of the more spectacular two color pictures from our January 2015 session hosted by Selim Tezel – be dazzled!
The math question underlying this session – what types of figures are two-colorable? The four color map theorem is relatively well-known, but what constraints on a figure/map would make it two colorable?
And a few counterexamples for you to ponder as well!