I rarely use group work in my classes. This is for several reasons, including one main reason - I never liked working in groups as a student myself. I teach technology classes (Word, Excel, PowerPoint) and find that each student needs "hands-on" time to grasp the concepts. Other reasons I rarely assign group work include a very small number of students in classes (sometimes 2 in a class) and it seems that every time I assign a group project, there are more problems than it's worth. "So and so isn't helping, so and so wasn't here, and on and on." I would rather each student just be responsible for themselves.