Erliananda, D., & Simanjorang, M. M. (2024). The Effect of Problem-Based Learning Model on Students’ Mathematical Problem-Solving Ability of Class VIII at SMP Negeri 35 Medan. Jurnal Pendidikan Tambusai, 8(1), 16335–16347. https://doi.org/10.31004/jptam.v8i1.14706