3. Often, cooperative group activities are repeated in several classes throughout the day. An easy way to be sure the needed materials are on hand for each group is to place all necessary materials into containers (small bins, resalable bags. etc). Then each table will have everything on hand. Be sure to assign some students to replace all materials at the end of class. It's a good idea to do a quick double check to make sure things have been replaced and to ensure nothing has been taken. Then you're ready for the next group and can begin without having to search for materials.