Hi John:
Sometimes, it just takes a little bit, a story, an example, a demonstration - to refocus students getting them back on track. Other times, more assertive technioques require changing topics, giong to a lab, moving from lecture to discussion. etc. Often PPT can lull students if the material is not attrcative and interesting. Here, I go to the white board, then back and forth between white board and PPT.
Regards, Barry
