[kandel]

On the other hand, a passive student will let you go through an entire proof only to raise his hand when you finish and ask something that implies he did not understand the proof from the start.

Why didn't you say so? You wasted both of our time... I even turned around a few times and asked if everyone was following!

I know it's hard to understand when you don't understand. But I don't know how to deal with this problem and the senior lecturers don't seem to know how to, either...

t. just started lecturing