Hi John: I always have to begin with the premise that there is a body of knowledge in a given subject, and the teacher is among the individuals selected to transfer that knowledge to the students. Of course there are many varied resources, media choices, learning aids, and instructional helps, and these tools facilitate the transfer process. I think we have to rememmber that with media, especially electronic media, these are tools only, and should not be the focus of the class. PPT is a great example where it can be overdone to the degree that students lose interest. "The carpenter doesn't emphasis the hammer, he uses it as a tool for the completed project". So it is with instruction. Regards, Barry