Following the emotional turmoil that was marking the precalculus tests, I decided that what I needed was to turn grading predictably miserably-done tests into a fun game.”And so, ladies and gentlemen, I hereby present – precalculus bingo:”Now, even if I lose, I win. I’m almost looking forward to next month’s test!”Update, Feb 16: Someone’s written Calculus Bingo. I’m grading calc tests today, so maybe I’ll play.