Apaison S, Prasertsang P, Rattanasuk S. THE DEVELOPMENT OF SCIENCE LEARNING ACTIVIES BASED ON THE CONSTRUCTIVIST THEORY OF CHANGE OF SUBSTANCES OF GRADE 5 STUDENTS AT BAN LAO KHAM SCHOOL (THE FOUNDATION FOR SOCIAL WELFARE EDUCATION), MUANG DISTRICT, ROI ET PROVINCE. AJMBU [Internet]. 2022 Jun. 17 [cited 2024 Apr. 20];11(2):391-404. Available from: https://so01.tci-thaijo.org/index.php/AJMBU/article/view/249486