Surayothin, J., Nakin, S., & Thongpakdee, L. (2025). DEVELOPMENT OF A TRAINING COURSE TO ENHANCE COMPETENCY-BASED INSTRUCTION FOR TEACHERS AND FOSTER STUDENTS’ PROBLEM-SOLVING ABILITIES AT SMALL PRIMARY SCHOOLS USING THE GF-TOR MODEL. Journal of Education and Innovation, 27(1), 103–117. https://doi.org/10.71185/jeiejournals.v27i1.271008