Supriatna, Irfan, Wahyudin, and Turmudi. 2024. “Description of Students Mathematical Understanding Ability Obtained by Problem Based Learning (PBL) and Inquiry Based Learning (IBL) Models”. International Conference on Elementary Education 6 (1). Bandung, Indonesia, 228-34. http://proceedings2.upi.edu/index.php/icee/article/view/3671.