PHONSRI, R.; NONTAPA, R. . The Mathematical Competencies of Grade 7 Students. Interdisciplinary Academic and Research Journal , Maha Sara Kham, TH., v. 3, n. 6, p. 167–182, 2023. DOI: 10.60027/iarj.2023.271127. Disponível em: https://so03.tci-thaijo.org/index.php/IARJ/article/view/271127. Acesso em: 10 dec. 2025.