Tarigan, E. R., Saragih, A. H., & Siagian, S. (2026). DEVELOPMENT OF PROBLEM BASED LEARNING-BASED E-MEDIA TO IMPROVE STUDENTS’ MATHEMATICS LEARNING OUTCOMES IN JUNIOR HIGH SCHOOL. SOSIOEDUKASI : JURNAL ILMIAH ILMU PENDIDIKAN DAN SOSIAL, 15(3), 110–117. https://doi.org/10.36526/sosioedukasi.v15i3.9157