Sari, Sonia, and Rahmah Putri. “THE EFFECT OF THE PBL LEARNING MODEL BASED ON SCIENCE, TECHNOLOGY, ENGINEERING, MATHEMATICS (STEM) ON THE COGNITIVE ABILITIES OF JUNIOR HIGH SCHOOL STUDENTS 1 BASA AMPEK BALAI TAPAN”. Universe 3, no. 1 (July 31, 2022): 14-19. Accessed February 5, 2025. http://universe.ppj.unp.ac.id/index.php/universe/article/view/134.