Uh-oh, I think I might be doing this (as a college lecturer).
Do you have some references, or some examples of how this might arise in a classroom?
As for references, I don't really. Everything in that course was on paper handouts made specifically for us by our instructor (we had a class of 5 people). Essentially, what you want to do is ask a question directly, without couching it in any NVC-style language. Don't say "Would you like to...?" or "Does anyone know...?" Those sorts of queries open you up to a sarcastic response, though as I said I wouldn't expect that tone from college students.