Simple things like this seem to be the most effective. This is particularly interesting, because it forces students to check what they (as a class) find most di

Simple things like this seem to be the most effective. This is particularly interesting, because it forces students to check what they (as a class) find most difficult, in order to find what they missed. From my experience, there seem to be two classes of professors, those that interact with the class, and those that don't. It is relatively easy for a professor to interact with and engage the class when the class is small, in the 20-30 student range. Personally, I don't care much for these classes because when the professor interacts with the class, all of the interaction becomes dominated by one or two students. Then there are the really good professors who teach a lecture-sized class, but still engage the students in the learning process. They have 50-100 students (or more), but still manage to get the students involved with learning. I have only had one professor do this particularly well, and I enjoyed his class far more than any of my others at the time. The interaction dynamic is very different in a class this sized. One or two students can't dominate the professor's attention, it just isn't possible.