WAIKRUEA, B. THE DEVELOPMENT OF LEARNING ACTIVITY SET USING THE GPAS 5 STEPS ADVANCED SYSTEM THINKING PROCESS COMBINED WITH THE STAD TECHNIQUE IN THE PHYSICS SUBJECT ON THE TOPIC REFRACTION ON LIGHT FOR MATHAYOMSUKSA 5 STUDENTS. Journal of Education and Innovation, [S. l.], v. 28, n. 1, p. 281994 , 2026. DOI: 10.71185/jeiejournals.v28i1.281994. Disponível em: https://so06.tci-thaijo.org/index.php/edujournal_nu/article/view/281994. Acesso em: 1 oct. 2026.