Professor Schriver is one of the best professors I've taken ever on south campus. Personally, I didn't have a strong physics background so physics classes were especially difficult for me. I had professors before him in the physics department that just derived equations during lectures. This helps to some extent, but professor schriver goes into the concepts which is what really matters. I got a grasp of the material in physics for basically the first time and I managed to pull off an A-. =)