“Pengaruh Penerapan Model Pembelajaran Problem Based Learning (PBL) Terhadap Kemampuan Pemecahan Masalah Matematis Siswa SMP”. Lentera: Jurnal Ilmiah Kependidikan, vol. 19, no. 1, July 2026, pp. 145-56, https://doi.org/10.52217/hz0zp171.