EFFECTIVENESS SCIENCE LEARNING INNOVATION THROUGH ANDROID-BASED LEARNING MEDIA AND WATER PURIFICATION PRACTICE WITH PROBLEM-BASED LEARNING MODELS. SPEKTRA: Jurnal Kajian Pendidikan Sains, [S. l.], v. 10, n. 1, p. 1–14, 2024. DOI: 10.32699/gjd7ry51. Disponível em: https://ojs.unsiq.ac.id/index.php/spektra/article/view/11086. Acesso em: 28 may. 2026.