“Problem Based Learning Dalam Meningkatkan Hasil Belajar Operasi Polinomial Siswa Kelas XI”. Proximal: Jurnal Penelitian Matematika dan Pendidikan Matematika 8, no. 4 (December 31, 2025): 1341–1349. Accessed March 23, 2026. https://e-journal.my.id/proximal/article/view/7673.