Safitriyanti, Dona Eka. “MENINGKATKAN KEMAMPUAN PEMECAHAN MASALAH MELALUI PENERAPAN MODEL PEMBELAJARAN PROBLEM BASED LEARNING DI SMPN 1 LEBONG”. Jurnal Penelitian Pembelajaran Matematika Sekolah (JP2MS) 7, no. 1 (April 30, 2023): 148–158. Accessed January 9, 2026. https://ejournal.unib.ac.id/JPPMS/article/view/27147.