Siregar RMR, Napitupulu E, Mulyono. Cultural Values in the Classroom: The Role of the Nan Sakato Principle in Developing Mathematical Communication. EJSER [Internet]. 2026 Sep. 28 [cited 2026 Oct. 17];13(3):623-42. Available from: https://revistia.com/index.php/ejser/article/view/3756