Siti Fazria Tobuto, Dewa Gede Eka Setiawan and 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), p. 1848~1853. doi: 10.56338/ijhess.v7i4.8883.