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Hongthong N, Samnakbankhok H, Akkharanit V. Mathematical Understanding on Division of Grade 4 Student in Classroom Using Innovation of Lesson Study and Open Approach. J. Comput. Creat. Technol. [internet]. 2024 Apr. 11 [cited 2025 Apr. 12];2(1):6-16. available from: https://so13.tci-thaijo.org/index.php/jcct/article/view/464