Herly Janet Lesilolo. Development of Teaching Materials Based on Problem-Based Learning . jppipa, pendidikan ipa, fisika, biologi, kimia [Internet]. 2023 Jun. 25 [cited 2024 Jul. 3];9(6):4320-5. Available from: https://jppipa.unram.ac.id/index.php/jppipa/article/view/3842