Moveable furniture is a must. In physics problem solving, groups of three work best. Individual Accountability requires the instructor to assess each person's performance. Asking questions randomly of individuals is one means of promoting this. To help the instructor to know the students' names, name tags can be worn.
Individual examinations are a means to assess a student's mastery of the material.
Students come to college with few cooperative experiences and thus frequently lack these skills. Group Processing involves an assessment by the participants of their group, what they did well and what they could do better the next time to improve the functioning of the group. Feedback can be formal and informal. Forms can be developed to give written feedback to the instructor on a given exercise. It is important to focus the student evaluation on the process of the group as opposed to the product.