Discussion on question by walkar: Techniques for good board handwriting

In my opinion, the biggest (if not the only) problem apparent in the photo is that you removed the previous contents of the blackboard with a try cloth or hand. Don't do that. Always use water, if you can (and if there's one of those rubber things to remove the water right after again). You can hold both objects - the wet one, and the dry one - in two hands and clean (really clean, not like the background in the photo) even a wide blackboard in virtually no time.

"... a dry cloth ...", I meant of course. So won't let me edit my comment any more now to correct that confusing typo.

@james.garriss: No. Powerpoint slides are the death of understandable teaching. They lead to going too fast; they force a single rate of coverage without responding to what the class "gets" or doesn't get; they discourage responding to students' interest or confusion; they put everyone to sleep. When you are doing example problems, and ask the students what to do, what happens? "Oh, well that might work, but it's not what's on the slide so we'll ignore your input." That's horrible.

@DavidRicherby: Ok - I don't find those so bad (or maybe I'm just used to worse ;-) ).

Definitely get your hands on Hagoromo Bungu chalks.