2025. PENINGKATAN KETERAMPILAN PEMECAHAN MASALAH PADA MATERI PENCEMARAN LINGKUNGAN MELALUI PROBLEM BASED LEARNING . BIOCHEPHY: Journal of Science Education. 5, 1 (Jun. 2025), 418–424. DOI:https://doi.org/10.52562/biochephy.v5i1.1517.