Research with the title Application of Cooperative Learning Models and Interaction Patterns in an effort to improve student learning outcomes in the Junior High School XVIII, South Tangerang Indonesia, in social studies subjects. This research was conducted on seventh grade students of Junior Hight School XVIII, South Tangerang. Indonesia. This research method uses a descriptive quantitative approach, while the research instrument used in this study is a questionnaire. The data analysis technique in this research is descriptive statistical test. The results of the study are the results of the application of cooperative learning models and interaction patterns in an effort to improve student learning outcomes, in social studies subjects, as evidenced by the results of statistical tests obtained based on the level of satisfaction, the average value obtained is strongly agree at 31%, agree at 50%, disagree by 18%, answers that strongly disagree obtained a value of 1%. Meanwhile, based on the answers according to the percentage of peer group interaction pattern variables, the average value obtained was 31% strongly agree, 41% agree, 24% disagree and 3% strongly disagree. The results of the answer test based on student achievement in social studies obtained the average value of those who answered strongly agree amounted to 29%, san who answered agreed 47%, and disagreed 22%, and strongly disagreed by 2%.