The document discusses cooperative learning. It covers the history and definition of cooperative learning from early thinkers like Dewey and Lewin to modern definitions from Johnson, Johnson, and Holubec. Cooperative learning is defined as having 5 criteria: positive interdependence, individual accountability, promotive interaction, interpersonal skills, and group processing. The role of the teacher is to plan lessons, explain tasks and skills, monitor students, and evaluate achievement. Common teaching techniques described are think-pair-share, timed talking, and ensuring the right learning environment. Results for students include positive interdependence, accountability, interaction, and processing of learning.