@Lovelife44 : Even though the students are adults, in this fast food mentality time in which we live in, it is difficult to keep even the most focused students engaged mentally. I try to support their engagement by breaking up my presentation. Lecture, PowerPoint slides, a dvd of the specific subject, all in segments small enough so that they don't fade away. I know that they want to be there in the class but even though they do, sometime it is a challenge for them to stay focused. I try to help them do that!