Hi Gregory: What would be cool is mini lessons, each with their own PPT/lecture/discussion, and practiacl session (as applicable), followed by the next mini lesson following the same format. There'd be variety, attention and involvement by students, and methodically, you'd move forward through the course. One mini lesson could serve as a back-up for another if needed. Another kind of back up is for when nothing goes as planned, so you implemment a back-up plan, something that requires little preparation, is timely, low tech, and interesting to students. Discussion, review of past work, or preparation for upcoming tests seeem to work well on short notice, for example. Regards, Barry