Rahayu, T., Sirait, A. P., Lubis, W., Mailani, E., & Gandamana, A. (2026). DEVELOPMENT OF PBL-BASED INTERACTIVE E-MODULES TO IMPROVE CRITICAL THINKING SKILLS OF GRADE 4 STUDENTS IN MATHEMATICS AT SDN 060866 MEDAN. Algebra : Jurnal Pendidikan, Sosial Dan Sains, 6(1), 269-276. https://doi.org/10.58432/z9jz5248