กุมภิโร พ.; กำจัดภัย ส.; ชำนาญกิจ พ. Development of an Enrichment Curriculum According to the Concepts of Context-based Learning through the Use of Problem-based Learning for Enhancing Mathematical Skills and Processes for Sixth Grade Students. Journal of Graduate School, Pitchayatat, Ubon Ratchathani Rajabhat University, [S. l.], v. 13, n. 2, p. 127–135, 2018. Disponível em: https://so02.tci-thaijo.org/index.php/Pitchayatat/article/view/221641. Acesso em: 19 may. 2024.