For instance, I asked my students to sit far from a computer monitor and chew on a pretzel. I asked them what they observed, and they said that the screen flickered. I believe that demonstrations such as this stimulate and help motivate students to question what they observe. Another way to keep yourself and your students motivated is to continually think up new approaches to teaching. My primary approach is to conjure up interesting new in-class demonstrations.
Students like to be entertained.
They are more focused when they are intrigued by the demonstration, and generally more likely to ask questions. I try to do in-class demonstrations at least every other lecture, and some recent optics demonstrations are described in the next section. He is a superior instructor and I was able to learn a lot from him. He is very easy to work with, and together we taught a great course. I believe optics is actually one of the premiere disciplines for effective in-class demonstrations and student laboratories.