Abstract
This study aims to implement collaborative learning of multicultural social science with lesson study patterns to strengthen student character education. The approach used is descriptive qualitative research. The data were collected by using observation, questionnaire, and documentation. The subjects of the study were social science teachers and students of class VIII and IX who were multicultural at junior high school 5 Narmada. The collected data were analysed by using the interactive model of Miles and Huberman which involves data reduction, data presentation, drawing conclusion or verification. The results showed that: 1) the stages of implementation (plan)the planning stage in the form of problem identification, the preparation of the multicultural social science collaborative learning tool made by the social science teacher team; the implementation stage (do)the implementation of multicultural social science with collaborative learning activities done by the model teacher; the reflection stage (see)the social science teacher team provides an explanation of the strengths and weaknesses that will be encountered during the implementation of multicultural collaborative learning of social studies; 2) Strengthening the students' character education when implementing multicultural social science with collaborative learning such as religious, curiosity, responsibility, democratic, creative, friendly, communicative, peace-loving, and cooperation.