Hidayat, W., Musahadah, M., & Zain, M. I. (2025). THE IMPLEMENTATION OF PROBLEM-BASED LEARNING MODEL TO IMPROVE MATHEMATICS LEARNING OUTCOMES ON SOLID FIGURES MATERIAL FOR FIFTH-GRADE STUDENTS. PROGRES PENDIDIKAN, 6(1), 1–8. https://doi.org/10.29303/prospek.v6i1.992