THE PROJECT BASED LEARNING MODEL ASSISTED WITH AUDIO VISUAL MEDIA TO IMPROVE THE UNDERSTANDING OF SCIENCE IN CLASS IV STUDENTS IN PRIMARY SCHOOL. josar [Internet]. 2025 Apr. 25 [cited 2026 Jan. 31];10(1):78-89. Available from: https://ejournal.unisbablitar.ac.id/index.php/josar/article/view/4293