Hidayat DD, Punding W, . S. Study of Students’ Mathematical Problem Solving Ability on the Material of Straight Line Equation in Class VIII SMP Negeri 6 Palangka Raya. JPN [Internet]. 2022 Jul. 7 [cited 2024 Jul. 22];23(1):48-5. Available from: https://e-journal.upr.ac.id/index.php/JPN/article/view/4878