SIREGAR, Torang; HILDA, Leyla. Penerapan Pendekatan Open-Ended untuk Meningkatkan Kemampuan Berpikir Reflektif Matematika Siswa di SMA Negeri 1 Panyabungan. Journal of Matematics In Teaching and Learning, [S. l.], v. 2, n. 2, p. 97–109, 2023. Disponível em: https://jurnal.stain-madina.ac.id/index.php/matematika/article/view/1415. Acesso em: 9 sep. 2025.