W. Buathong, K. Chaowatthanakun, O. Duangkhae, and W. Aiyarapattana, “THE DEVELOPMENT OF MATHEMATICS REASONING SKILLS BY USING THE LEARNING MANAGEMENT WITH THE OPEN APPROACH OF MATTHAYOMSUKSA 1 STUDENTS, KUNNASOOTSUKSALAI SCHOOL, SUPHANBURI PROVINCE”, Education MCU, vol. 13, no. 1, pp. 125–134, Apr. 2026.