Kasim, G.F. et al. 2024. Development of RPP-LKPD Based on the Ber2P3 Learning Model on Student Concept Mastery on Vibration and Wave Materials. Jurnal Penelitian Pendidikan IPA. 10, 7 (Jul. 2024), 4427–4432. DOI:https://doi.org/10.29303/jppipa.v10i7.6077.