s that make them believe they sink or swim together. When positive interdependence is solidly structured, it highlights that (a) each group member’s efforts are required and indispensable for group ess and (b) each group member has a unique contribution to make to the joint effort because of his or her resources and/or role and task responsibilities. Doing so creates mitment to the ess of group members as well as one’s own and is the heart of cooperative learning. If there is no positive interdependence, there is no cooperation.РThere are a number of ways of structuring positive interdependence.РPositive goal interdependence Students perceive that they can achieve their learning goals if and only if all the members of their group also attain their goals. The group is united around mon goal