Nurmairina, N., Mardhatillah , M. ., Hasanah, H., Lestari , N. and Siregar, N. (2024) “Analysis of the Application of the Problem Based Learning Model in Multi-Grade Teaching Courses (PKR) at PGSD UMN Al Washliyah Medan”, Jurnal Ilmiah Teunuleh: International Journal of Social Sciences, 5(3), pp. 145-152. doi: 10.51612/teunuleh.v5i3.167.