"Coverage" remains a word we are all so accustomed to that it lingers long after we have formally abandoned the concept; we find it hard to leave a question or idea "unanswered" at the end of a class period, for fear our students will go home without having been told "the truth."
Continuing a little bit later:
Suppose they reach the wrong conclusion, factually or morally? We fret, as though for the moment we believe the conclusion reached on Wednesday the 17th was the critical component of the lesson.Hmm, I know this one will stir up some thoughts for some of you. I think I'll leave it here for now until you comment . . .