Purba, D. A., Nasution, A. S., & Andriani, N. (2023). Improving Student Learning Outcomes with Problem Based Learning in Islamic Learning at SD Negeri 102112 Sipispis. Jurnal Pendidikan Profesi Guru, 1(1), 210–217. https://doi.org/10.22373/jppg.v1i1.6677