Angela,
I mix it up. For instance, I may use PPT for only 10-minutes, then discussion, then back to PPT for 20 minutes, then a written activity, then back to PPT that has a short video embedded, then discussion, etc., etc. By using variety, students stay engaged and more interested. Also, I'll only use use PPT when it absolutely the best way to communicate an idea or information. Otherwise, I avoid it.
Barry Westling
