Penerapan Model Pembelajaran Problem Based Learning Dalam Meningkatkan Hasil Belajar Siswa Kelas IX.1 Materi Memahami ArtiSurat Al-Hujurat Ayat 13 di SMP IT Nurul Ishlah Banda Aceh. Validitas. 2025;1(2):99-108. Accessed February 5, 2026. https://journal.maysapublishing.com/index.php/Validitas/article/view/238