Hilma Innayah Putri, Keysha Kholillah Alqindy, Lisa Nabilah, Shafa Kamila Putri Anggraini, & Nurdiansyah. (2025). Development of Problem-Based Learning Strategies to Deepen Elementary School Students’ Understanding of Social Studies Concepts. COMPETITIVE: Journal of Education, 4(2), 97–106. https://doi.org/10.58355/competitive.v4i2.99