“Development of Problem-Based Learning (PBL) Based Flipbook Media on Science Learning At SDIT Ar-Rohmaniyah, Bogor City” (2023) International Journal on Engineering, Science and Technology, 4(3), pp. 187–191. Available at: https://ijonest.net/index.php/ijonest/article/view/78 (Accessed: 10 November 2025).