This research aimed to describe about the increase of the student's motivation by cooperative technique word square on social studies in class V SDN 16 South Pontianak. The method that used in this research is desciptive method with the kind of research is classroom action research. The subject in this research are the teacher who teach in social studies class and the student in class VA totalling 34 students. The analysis result showed that there are increase on teacher's skill when teaching with cooperative learning technique word square and student's motivation. The increase of teacher's skill when teaching with cooperative learning technique word square can seen from the increase of the average score from all of the cycle, 3,35 on first cycle, 3,53 on second cycle and reach 3,92 in third cycle. The increase fron first cycle to third cycle is 0,57. Meanwhile the increase of student's motivation can seen from the increase of the percentage average, 56,77% on first cycle, 73,38% on second cycle, and reach 79,41% in third cycle. The increase from first cycle to third cycle is 22,64%