Kongthum1*, A. ., Numnaphol, K., Sarakhun, N. ., Kalam, S. ., Wirat, U. ., Summart, P. ., & Singhara, P. . (2024). Developing learning achievement for Mathematics Subject on topic Fractions By activities inquiry-based learning (5Es) of students in Prathomsuksa 6 at Loeng Nok Tha Kindergarten School Yasothon Primary Educational Service Area Office 2: Developing learning achievement for Mathematics Subject on topic Fractions By activities inquiry-based learning (5Es) of students in Prathomsuksa 6 at Loeng Nok Tha Kindergarten School Yasothon Primary Educational Service Area Office 2. RATANABUTH JOURNAL, 6(1), 532–546. retrieved from https://so07.tci-thaijo.org/index.php/rtnb/article/view/4417