Paynandos, Jean Rose R. “Validation of the Developed Innovative Supplemental Materials (ISMs) on the Least-Learned Competencies in Grade 8 Physics”. International Journal of Multidisciplinary: Applied Business and Education Research, vol. 6, no. 3, Mar. 2025, pp. 1494-12, https://doi.org/10.11594/ijmaber.06.03.34.