Sekaryati N. PENINGKATAN AKTIVTAS DAN HASIL BELAJAR BIOLOGI SISWA MELALUI PENGGUNAAN MODEL PEMBELAJARAN PROBLEM BASED LEARNING. Pijar [Internet]. 2023 Jul. 20 [cited 2024 Sep. 20];3(3). Available from: https://ejournal-leader.com/index.php/pijar/article/view/218