T. J. Buhungo, S. Supartin, A. . Arbie, D. G. E. . Setiawan, A. . Djou, and M. . Yunus, “Learning Tools Quality of Problem-Based Learning Model in Contextual Teaching and Learning Approach on Elasticity and Hooke’s Law Materials”, jppipa, pendidikan ipa, fisika, biologi, kimia, vol. 9, no. 3, pp. 1092–1098, Mar. 2023.