The document discusses research on the benefits of cooperative learning in classrooms. It finds that when students work in groups, they are more motivated, feel greater social cohesion, can personalize learning by addressing difficulties with peers, and think through ideas more cognitively. Two key elements for effective cooperative learning are establishing group goals and ensuring individual accountability. The document also provides examples of techniques teachers can use to implement cooperative learning, such as peer evaluation of homework, student reporters, and assigning students to help peers who have not learned the material.