Zulfah Adiatmah Nauap, and I Wayan Widana. “Application of Problem-Based Learning (PBL) Model and Project-Based Learning (PJBL) in Learning Mathematics in Elementary Schools”. International Journal of Educational Technology and Society, vol. 1, no. 4, Nov. 2024, pp. 25-36, doi:10.61132/ijets.v1i4.152.