Henricus Totok Yulianto, Atik Tusmiyati, dan Heni Widiastuti. PENINGKATAN AKTIVITAS DAN HASIL BELAJAR SISWA MELALUI PENERAPAN MODEL PROBLEM BASED LEARNING (PBL). teacher [Internet]. 2023Apr.28 [cited 2025Feb.2];4(1):1-12. Available from: https://ojs.cahayamandalika.com/index.php/teacher/article/view/128