NUR AINUN. UPAYA PENINGKATKAN KEMAMPUAN PEMECAHAN MASALAH MELALUI MODEL PEMBELAJARAN PROBLEM BASED LEARNING PADA MATERI HIMPUNAN. Jurnal Serambi Ilmu, [S. l.], v. 19, n. 2, p. 182–195, 2024. DOI: 10.32672/jsi.v19i2.880. Disponível em: https://jurnal.serambimekkah.ac.id/index.php/serambi-ilmu/article/view/880. Acesso em: 2 dec. 2025.