The Application of the Two Stay Two Stray Learning Model and Co-Op Co-Op for the Improvement of Students’ Learning Outcome in the Environmental Epidemiology Subject

This study aimed to determine the improvement of the Environmental Epidemiology Subject's learning outcomes through Two Stay Two Stray (TSTS) and Co-op Co-op learning model strategy. This study was a classroom action research and compared the scores in the semester of the academic year 2018/2019 (conventional class) and 2019/2020 (learning model strategy). This study's subjects were 45 fourth grade students. The average midtest score obtained by students was increasing with 72.07. From the results of the t-test, it is obtained that the t-count at 2.94 is higher than the t-table of 2.026. This data showed that the learning outcomes of students increased significantly compared to conventional. Based on these results, it can be concluded that the TSTS and Co-op Co-op that was the model that invites the students to be active through the group in the learning activities.