Sriboonruang, N., Kasemsukpipat , W. . ., & Ugsornkid, S. . . (2024). The Effects of Using Context-Based Learning Activities for Developing Proportional Reasoning Ability of Mathayomsuksa 1 Students. Humanities and Social Sciences Journal of Pibulsongkram Rajabhat University, 18(1), 334–347. https://doi.org/10.14456/psruhss.2024.23