PRACTICAL RESEARCH ON SYSTEM FOR IMPROVING LESSONS THROUGH LESSONSTUDY IN PRIMARY SCHOOL MATHEMATICS EDUCATION

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Two main results of this research are the followings.(1) In case of school with less than 3 classrooms in each grade, making some groupsof different grade teachers with different teaching carriers, and in case of school withmore than 3 classrooms, making some groups of same grade teachers are effective systemsfor improving lessons through a long-term lesson study in terms of teachers’ professionaldevelopment and students’ mathematical attainment.(2) It is significant for lesson study in a school that a community of all teachersshares and understands the sequence of teaching mathematical contents and different waysof thinking of their students in learning mathematics throughout 6 years.