Hendriana H, Prahmana RCI, Hidayat W. The innovation of learning trajectory on multiplication operations for rural area students in indonesia. j. math. educ. [Internet]. 2019 Sep. 3 [cited 2025 Jul. 11];10(3):397-408. Available from: https://jme.ejournal.unsri.ac.id/index.php/jme/article/view/3802