When my students get tired or lose focus, I give each student a 3 by 5 index card and ask each student what they have learned. With this exercise they really see how much they accomplished in accounting, comptuer classes, business communications, business law, and professional development. Another strategy I use is to ask each student to tell me one new piece of information they have learned at the end of class. The students know at the beginning of class what the lesson objective is and they know my goal is for every student in the class learn at least one new piece of information hopefully more. Now this activity challenges me as an instructor because I have some students who know most of the material or have had some of the material in high school, however, this keeps both the students on their toes as well as me.