Nambuddee, N., Changsri, N., & Inprasitha, M. (2019). Teachers’ Interpretation of Mathematics Textbook by Using Lesson Study and Open Approach. KKU Research Journal (Graduate Studies) Humanities and Social Sciences, 7(2), 23–35. Retrieved from https://so04.tci-thaijo.org/index.php/gskkuhs/article/view/206622