Ruben Lopez

I utilize Beat the Clock based on Power Point Lecture Objectives at the end of the lecture.  The team that answers the defines the most ojectives in a given time frame win.  This encourages my students to pay closer attention during lecture and the the winners get "goodies" from the price box that is full of Halloween candy, 

I typically pair them with a outgoing student.  The lack of participation usually comes from shy students.  When their partner is not shy and outspoken enough for the two of them.  This gives the shy student the confidence to participate without being the most noticible student.