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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 (Oct. 2025), 1848~1853. DOI:https://doi.org/10.56338/ijhess.v7i4.8883.