When you are presenting subject matter to the class,if some do not understand what you are giving them, you have to try to be aware of the "I dont understand" look that comes over their face, and get them to question what you said. We, as instructors, are not mind readers, but, we usually can tell is a student is not getting it. We have to get through to the students that it is ok to ask questions when the do not understand what the instructor has just laid before them.
