Vista A, Sukma E. Writing Narrative Essays Using the Problem-Based Learning Model Assisted by Series Drawings in Elementary Schools. jppipa, pendidikan ipa, fisika, biologi, kimia [Internet]. 2023 Dec. 20 [cited 2025 Jul. 25];9(12):12182-90. Available from: https://jppipa.unram.ac.id/index.php/jppipa/article/view/6069