Manurung HS, Panggabean FTM, Purba J, Siregar T. COMPARATIVE ANALYSIS OF STUDENTS’ MOTIVATION AND LEARNING ACHIEVEMENT THROUGH PROJECT-BASED LEARNING AND PROBLEM-BASED LEARNING ASSISTED BY INSTRUCTIONAL VIDEOS IN REACTION RATE LEARNING. J. IPI [Internet]. 2026 Oct. 3 [cited 2026 Oct. 10];14(3):158-66. Available from: https://mail.ejournal.uncen.ac.id/index.php/JIPI/article/view/5996