One thing I’ve found is that when I am doing stations, the first one is the least effective. By the fourth one, I have it wired; what to say, how to explain it. This makes it hard on the students in the first station, of course. If I were the teacher I could stack the first station with the kids who need the least help. Or, God forbid, rehearse it (but where would i find the test subjects). Or just accept that as the way things go.
I do recognize what an advantage long time teachers have, having seen and done pretty much everything multiple times. The challenge there seems to be not getting jaded or burning out.