Ayustin FD, Arifin Z, Asmana AT. Problem-based learning with scaffolding and equation board media for facilitating junior high school students’ mathematical modelling ability . JPM [Internet]. 2026 Aug. 24 [cited 2026 Sep. 8];12(2):148-64. Available from: https://riset.unisma.ac.id/index.php/jpm/article/view/25814