Waode Ekadayanti, A. Puspita Sari, and L. Sisi. “Effectiveness of Problem-Based Learning for Numeracy Across Self-Efficacy Levels Among Fifth-Graders at SDN 13 Andoolo”. Journal of Education and Learning Sciences, vol. 6, no. 1, Aug. 2026, pp. 650-9, doi:10.56404/jels.v6i1.447.