Sudsaneiha, A. ., Wangkaeohiran, T. . and Ankasem, P. . (2020) “A Study of Academic Achievement Based on Mathematical Process by a Learning Activitiy Package According to the Active Learning Concept for Prathomsuksa 4 Students”, Journal of Graduate Research, 11(2), pp. 123–136. Available at: https://so02.tci-thaijo.org/index.php/banditvijai/article/view/241132 (Accessed: 29 March 2024).