Noppan, O. ., Hunsuwan, K. ., & Pattaragoranan, N. . (2025). Development of Academic Achievement in the Thai Language Learning Subject: Diphthongs, Using the Cooperative Learning Process with the STAD Technique for Grade 6 Students at Bangkokthonburi Demonstration School. Journal of Buddhist Education and Research (JBER), 11(3), 190–200. retrieved from https://so06.tci-thaijo.org/index.php/jber/article/view/283831