Hidayatika, A., U. A. Wati, and R. C. Murti. “Exploring Pre-Service Elementary School Teachers’ Conceptual Understanding and Problem-Solving Strategies in Basic Mathematical Concepts”. International Journal of Learning Reformation in Elementary Education, vol. 5, no. 03, Oct. 2026, pp. 916-39, doi:10.56741/IISTR.ijlree.002440.