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The aim of this study was to see the collaboration of students through the lesson study for learning community (LSLC) on circle material. The subject of this study was a eight-grade studentsat SMP 1 Palembang. The method of this study quantitative descriptive by using a survey method with the PMRI approach. Data is obtained through observation of student activities documentation of events in the classroom, in the form of photos and videos, and collection of student tasks. Stages of LSLC is Plan, See, Do and Re-Design. The learning process is carried out with two activities, each activity consists of Sharing tasks and Jumping tasks. In sharing tasks, students work on sharing activities in groups, while in jumping students do the questions individually and the problem has been raised from the previous level. The use of LSLC gave a positive impact on students of class VIII in SMP N 1 Palembang on circle material. Positive impacts that arise include raising a sense of care for friends, reducing competition and collaboration between students in learning.