Ulfania Julisa, Maimunah, Kartini. Development of contextual-based mathematics teaching materials to facilitate students’ mathematical problem-solving ability on systems of linear inequalities in two variables. JA [Internet]. 2026 Apr. 30 [cited 2026 Jun. 13];9(1):259-72. Available from: https://journal.upp.ac.id/index.php/absis/article/view/4132