Harefa, Berkat Sarotodo, Hendrikus Otniel Nosazaro Harefa, Fatiani Lase, and Syukur Kasieli Hulu. 2026. “Analisis Penerapan Model Pembelajaran Problem Based Learning (PBL) Terhadap Kemampuan Memecah Masalah Sosial Siswa”. JIIP - Jurnal Ilmiah Ilmu Pendidikan 9 (4):3896-3910. https://doi.org/10.54371/jiip.v9i4.11138.