This research was motivated by the lack of students’ activity in learning Civics in grade XI Senior High School of the Indonesian School of Davao. Based on the results of initial observations during the teaching and learning process, there were only 2 students who got the active category, 6 students were quite active and 9 students were less active. Besides of being less active in learning activities, students’ learning outcomes are also low. Out of the 17 students, there were only 2 students or 11.7% who passed the Minimum Passing Grade (MPG). This type of research is Classroom Action Research. In this study, the subjects were the students of class XI Senior High School of Sekolah Indonesia Davao – Philippines with a total of 17 students consisting of 9 boys and 8 girls. The data collection instruments used were student observation sheets, teacher activity observation sheets in the application of the Broken Square learning model and student learning outcome tests. This Classroom Action Research was carried out in two cycles where in each cycle started from the planning stage, implementation of action, observation and reflection. The application of the Broken Square learning model is considered successful if the class completeness reaches 60% with MPG score of 70. Meanwhile, for student activity, it is expected that students can reach 70%. The results showed an increase in the activity and learning outcomes of grade XI Senior High School of the Indonesian School of Davao by using the Broken Square learning model. Student learning activity at the initial condition obtained an average grade of 49, then after the action in the first cycle increased to 55 and in the second cycle it became 80. Meanwhile, student learning outcomes also experienced the same thing. The passing percentage was 11.7%, then the first cycle increased to 64.7% and increased again to 81.25% in the second cycle. Based on these, it can be said that the use of the Broken Square Type Cooperative Learning Model has an effect on increasing the activeness and learning outcomes of grade XI students. In addition, it is hoped that this research can be published in international journals with accepted status.