Hi Carol: Reengaging can be simple or sometimes more aggresive tatics are needed. On the simple side, changing the speed, pitch and/or volume of the voice can keep interest. Asking a question or two at random will cause students to pay attention as they may be called on. Stand up and stretch. I once stopped mid sentence and said "okay everyone repeat this loudly: LaLaLaLaLaLaLaLaLaLaLaLaLaLaLaLaLa". It was so unexpected, within a few seconds, the whole class was laughing and wondering what the heck? Then I went immediately back to my lecture. When asked by a student why I did that I responded, "Hey, what did we talk about right after that, and the student was able to immediately recall. I said "that's why". More aggressive may mean shifting into another activity altogether, from lecture to discussion; from PPT to worksheet; from discussion to lab, or similar kind of change ups. Although these modify the focus, to me, this is better than wssting the whole period on material the students won't remember. Regards, Barry