There are many problems in Differenciated Curriculum based on the individualistic learning structure in Social Studies. Social Studies Education is committed to fostering human dignity, ratonal thinking, humane and civil behaviors, and active, responsible participation in the social, political, and economic life in the many communities of which one is a member. Cooperative learning structure is to help students to gain higher comprehension of the information, concepts, and procedures, as they interact in their group, than when studying on their own in the individualistic learning structure. Therefore A Team Asissted Individualization model, integrated cooperative and individualistic learning, is propoded, which is applyed to Social Studes.