I find that I can get good recommendations by asking intelligent questions. Also, it never hurts to visit a professor in office hours to discuss an aspect of th

I find that I can get good recommendations by asking intelligent questions. Also, it never hurts to visit a professor in office hours to discuss an aspect of the class. It doesn't have to be a question of understanding, but if you show interest in the class, the professor will notice. At least this has been my experience.