Theeramethakul, S. and Art-in, S. (2020) “THE DEVELOPMENT OF MATHEMATICS PROBLEM SOLVING AND ANALYTICAL THINKING ABILITIES FOR GRADE 8 STUDENTS USING 4E×2 INSTRUCTIONAL MODEL”, Journal of Graduate MCU KhonKaen Campus, 7(3), pp. 210–225. available at: https://so02.tci-thaijo.org/index.php/jg-mcukk/article/view/242064 (accessed: 10 October 2026).