One student who couldn't come to office hours and had scheduled an appointment during my lunch break told me in advance that he could not make the appointment and that I should enjoy my lunch. Functionality and politeness? How did you end up in my class, and are there more of you???
Students in my introductory algebra course actually listened to me when I instructed them to show all of their work - and neatly - on their exams. Students saw a boost in partial credit, both because I could see how they solved the problems, and also because I was in a better mood.
Two students emailed me with questions about their homework, and they actually included screenshots of their responses! I didn't have to read their minds or guess at what they had done. This made responding to their questions easy, quick, and almost fun!
Q: Has anybody else had a student brighten their day yet this semester?