http://www.openculture.com/2016/02/stephen-hawkings-lectures-on-black-holes-now-fully-animated-with-chalkboard-illustrations.html
fun
Great work with the chalk. One caveat: that part which says it was "confirmed" is not totally true. It has been confirmed "theoretically" by other methods from different people, on a theoretical basis but never confirmed experimentally. Don't know if the mistake is an oversight or disingenuous...