Aulya, M., & Manalu, K. (2025). THE EFFECT OF THE PROBLEM BASED LEARNING (PBL) LEARNING MODEL ON THE PROBLEM-SOLVING ABILITY OF THE HUMAN RESPIRATORY SYSTEM MATERIAL IN STUDENTS OF SMA NEGERI 1 BAHOROK: PENGARUH MODEL PEMBELAJARAN PROBLEM BASED LEARNING (PBL) TERHADAP KEMAMPUAN ‎PEMECAHAN MASALAH MATERI SISTEM PERNAPASAN MANUSIA PADA SISWA SMA NEGERI 1 ‎BAHOROK. SOSIOEDUKASI : JURNAL ILMIAH ILMU PENDIDIKAN DAN SOSIAL, 14(3), 1066–1074. https://doi.org/10.36526/sosioedukasi.v14i3.5933