Aripin U, Rosmiati T, Rohaeti EE, Hidayat W. Learning Trajectory for Teaching the Mean Concept Using Problem-Based Learning and Animated Video. Math. Educ. J. [Internet]. 2025 Jan. 28 [cited 2025 Apr. 17];19(1):181-96. Available from: https://jpm.ejournal.unsri.ac.id/index.php/jpm/article/view/108