Well, pointless busywork was a staple of my high school and under days of math. Once I got to college, I had a professor for Calculus I that said our grade was the four tests + the final or just the final - whichever grade was higher. Having taken Cal in high school, I just showed up for the final and got a B+ (I reversed the damn derivatives of ln/e).

That was the best math class I never took. To be fair, my discipline wasn't anything scientific so needing math wasn't in my college curriculum (switched from business to psychology then to art and advertising). I took another class, Discrete Math, from the same teacher my senior year as an elective and absolutely loved it. I never skipped a day.

He was a great teacher, and the way his class was set up for grading and not really giving a shit about homework was perfect. If I were to ever teach math later, his format would be how I would do it.