BUANA, I. K. S. Upaya peningkatan prestasi belajar matematika melalui strategi pembelajaran open ended. Indonesian Journal of Educational Development (IJED), [S. l.], v. 2, n. 1, p. 187–194, 2021. DOI: 10.5281/zenodo.4781887. Disponível em: https://ojs.mahadewa.ac.id/index.php/ijed/article/view/1071. Acesso em: 21 aug. 2025.