<p>I’ve told this here before, but once I was a Teaching Assistant for a calculus-based intro I (college) physics course. The instructor met with us every week. The first week, she said to go over the basic most common function derivatives in recitation, so I went to recitation and said “dr. Soandso told us to go over some common derivatives so lets do that”. On their end of the semester reviews one student said that I was a terrible instructor because I did calculus the first day and this was NOT a math class. So I was a “bad teacher” for doing what my boss ordered. Presumably, were he the TA, he would have told the boss where to put her derivatives. Yessiree. </p>