Nurhayati Sholihah, Ismi. 2025. “EFEKTIVITAS MODEL PROBLEM BASED INSTRUCTION TERHADAP HASIL BELAJAR IPA SISWA KELAS IV SDN BOJONGRENGED 1”. ELEMENTARY: Jurnal Inovasi Pendidikan Dasar 5 (3):669-81. https://doi.org/10.51878/elementary.v5i3.6890.