There was a math mistake on another teacher's board that I wanted to tell the teacher about but I did not want to embarrass her. It showed 22 divided by (1/2) = 11. At the time when I noticed, there were other teachers present so I didn't say a word........If others had left, I probably still would have said nothing..... (Perhaps I just answered my own question!!) What bothered me was that it was incorrect. If it was the teacher's work, that's one thing. If a student wrote that, and it wasn't corrected, that's still bad. Question is as follows: Should I have pointed that out? And if so, how could I have done it without risking embarrassment?