We had a class on statistics this morning at Uni, 09:30 to 1100. By 10:15, 45 minutes into the class I had not yet had to do any work.
By this half way point in the lesson, all we had done was revisit the homework we had been set and go into the questions that some people had trouble with.
This isn’t in itself a bad thing to do but there were a number in the class (myself included) who had not had any issues with the homework, and had therefore spent half the lesson sitting here doing nothing.
It would have been good if we had been set some exercises first, before being asked if anyone had any issues with the homework. In that case anyone who had issues could have paid attention to the board and anyone who didn’t could have been doing something productive.
I think it’s worth noting that the problem can arise the other way around too. If a student asks a very challenging question, teachers should be wary of going into a detailed response without ensuring that either a) all members if the class can engage with the response or b) that lower ability students have something else to be working on.