So, I did a talk at TESOL Toronto 2015 on teaching teachers how to get past the fears and biases of drawing sketches on the board.
Here's the handout link: http://tefl.posthaven.com/bored-of-boardcraft-handouts-by-roger-dupuy
Here's a link to part 1 of a 4-part video of the talk. It's a condensed version.
Here's a link to part 2.
Here's a link to part 3.
And part 4. (coming soon!)