Sharon, outstanding comment about learning from our students. Any instructor that feels they have nothing to learn from their students should not be teaching in my opinion. One of the great aspects of teaching is the constant exposure to new questions and new ways of looking at older concepts. Students ask questions that can make us as instructors think differently and require us to be creative in our approach to teaching. We need to treasure the questions that we do not have immediate answers and thank those students that allow us to rethink out approach to teaching a specific subject matter. James Jackson