Siti Fazria Tobuto, Dewa Gede Eka Setiawan, & Lukman Samatowa. (2025). The Influence of the Problem-Based Learning Model with a Differentiated Approach on Senior High School Students’ Problem-Solving Ability in the Concept of Sound Waves. International Journal of Health, Economics, and Social Sciences (IJHESS), 7(4), 1848~1853. https://doi.org/10.56338/ijhess.v7i4.8883