Hello Again, By using a combination of delivery systems, you will be meeting the learning styles of your students. As you mentioned students learn in four primary modes, listening, reading, viewing, and tactile. I think by offering instruction in a variety of these modes the content remains exciting and challenging for both me and the students. By using variety, you can also see what works and doesn't work in your delivery. If you keep a notebook of these presentations and their successes you will develop a comprehensive picture of delivery options and how you can make them work best for you. I have been doing this for many years and it helps me to have many options available to me when I hit a class that is challenging for me to meet their individual learning needs. Gary --