I caught Vi Hart’s Hexaflexagons a while back and wanted to post more of her awesome math/science stuff, but then other stuff got in the way and the links just sat in my queue. Until today.
Vi Hart is an exceptionally talented scientist, completely capable of reducing complex mathematical concepts into bite-sized, easily digestible chunks of absolute awesome. She has a whole channel on YouTube and I strongly suggest you subscribe to it like I have.
Meanwhile, here are some more of her gems to carry us through to Thanksgiving. (Ignore the weird title still. The link works just fine!)