Doodling in Math Class: Connecting Dots with Vi Hart – Recreational Mathemusician

Anti-parabola propoganda, plus musing on math class, cardioids, connect the dots, envelopes of lines, even a bit of origami.

Video: http://www.youtube.com/watch?v=v-pyuaThp-c

http://vihart.com/

http://www.youtube.com/user/Vihart

http://en.wikipedia.org/wiki/Vi_Hart

(Many thanks to David Patterson,
Department of Mathematical Sciences,
University of Montana for sharing this.)