Listiana W, Pasaribu LH, Julyanti E. The influence of the problem-solving learning model on students’ ability to understand concepts in solving mathematics story problems material systems of linear equations with two variables. Math Didactic [Internet]. 5 Februari 2024 [dikutip 3 Agustus 2025];10(1):25-. Tersedia pada: https://jurnal.stkipbjm.ac.id/index.php/math/article/view/2556