MONGKAU, J. G. .; SUMILAT, J. M. . Studi Kasus Penerapan Prinsip Understanding by Design Pada Pembelajaran Matematika Kelas 5 di SD Negeri 1 Nanasi. Economics and Digital Business Review, [S. l.], v. 5, n. 2, p. 520–530, 2025. DOI: 10.37531/ecotal.v5i2.1934. Disponível em: https://ojs.stieamkop.ac.id/index.php/ecotal/article/view/1934. Acesso em: 19 jul. 2025.