PENERAPAN MODEL PROBLEM BASED LEARNING PADA MATERI DAMPAK SAMPAH TERHADAP LINGKUNGAN UNTUK MENINGKATKAN KEAKTIFAN SISWA KELAS V. Jurnal Metabio, [S. l.], v. 8, n. 2, p. 18–25, 2026. Disponível em: https://jurnal.usi.ac.id/index.php/jpbm/article/view/2678. Acesso em: 26 oct. 2026.