Sangthong, S., & Wongsaphan, M. (2020). DEVELOPMENT OF PROBLEM – SOLVING ABILITY IN MATHEMATICAL FOR MATHAYOMSUKSA 4, USING INQUIRY BASED LEARNING AND COOPERATIVE PROBLEM SOLVING LEARNING PACKAGE PROBABILITY. Journal of MCU Nakhondhat, 7(9), 221–235. Retrieved from https://so03.tci-thaijo.org/index.php/JMND/article/view/246738