Mariam Nasution, I Made Arnawa, Ali Amran, Edwin Musdi. Practicality Development of Problem-Based Learning Models and Giving Reward to Algebra Linear Elementer. IJIE [Internet]. 2021Apr.23 [cited 2024Nov.23];4(4):153-7. Available from: https://journals.researchparks.org/index.php/IJIE/article/view/1629