Two weeks ago my Dad and I went to the MoSAIC Festival at the University of Nebraska-Lincoln. We drove 500 miles, from Denver, Colorado to Lincoln.
We met the Chief Visionary Officer of Zometool, Paul Hildebrandt. My Dad had a lot of fun making a very cool dodecadodecahedron from the Zometools Paul had brought. My Dad and I also had a long conversation about the fourth to the infinite dimensions. Then we learned how to make a hexaflexagon from a Vi Hart video. It was all very very cool and fun! Here’s one of the videos made by Vi Hart on the hexaflexagon:
I would like to try this sometime.
Zeno's Meatball 
Wow, what a cool video. The young woman doing the demo has skinny fingers–that’s a plus. She’s a fast talker, good storyteller, a thinker, and a tinkerer.
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