Wahyuni E, Putri R. THE EFFECT OF PROJECT BASED LEARNING MODEL ON COGNITIVE SKILL OF 8th GRADE STUDENTS’ ON DYGESTIVE SYSTEM TOPIC. universe [Internet]. 19Mar.2024 [cited 5Feb.2025];4(2):173-6. Available from: http://universe.ppj.unp.ac.id/index.php/universe/article/view/551