The document discusses collaborative learning, cooperative learning, and active learning. It defines collaborative learning as students working together to solve problems or complete projects. Cooperative learning is related and involves students working in small groups on specific tasks. Active learning techniques engage students more than passive listening, and can include discussions, think-pair-share activities, learning cells, and games. The key aspects of these student-centered approaches are that they involve students working directly with each other to discuss and apply the course material.