Tanbanjong A, Pangyoung S. The Construction and Efficiency Evaluation of Competency-based Instructional Modules for Developing the Competencies of the Lower Secondary Mathematics Teachers. kasetsart J. Soc. Sci. [internet]. 1988 Jul. 1 [cited 2026 Sep. 11];9(2):175-84. available from: https://so04.tci-thaijo.org/index.php/kjss/article/view/243871