Dhaffah VN, Maudy SY, Putra M. Learning Obstacles in Understanding Pyramid Volume: An Epistemological and Didactical Analysis within the Didactical Design Research Framework. Didact. Math. [Internet]. 2026 Jul. 7 [cited 2026 Aug. 6];8(2):345-70. Available from: https://www.ejournal.unma.ac.id/index.php/dm/article/view/18713