I have inserted power point slides that include questions based on what we have just covered.  This is done several times through out the PP lecture, great for those visual learners!  For instance: we just covered blood flow through the heart and body. Questions on the next slide would include "which vessel carries de oxygenated blood to the heart?" Then list the vessels, and students answer.  The answer is then highlighted with the next click and also a visual.   Or "what is the goal for the body to use compensatory mechanisms to keep blood flowing?"  next slide is the… >>>