Klaharn S, Hoksuwan S. THE DEVELOPMENT OF A PROGRAM TO ENHANCE TEACHERS COMPETENCY IN ACTIVE LEARNING MANAGEMENT IN SMALL-SIZED SCHOOLS UNDER THE OFFICE OF SECONDARY EDUCATION SERVICE AREA KALASIN. AJMBU [internet]. 2025 Jun. 4 [cited 2026 Oct. 13];14(2):70-8. available from: https://so01.tci-thaijo.org/index.php/AJMBU/article/view/280291