THE EFFECT OF THE JIGSAW COOPERATIVE LEARNING MODEL ON LEARNING OUTCOMES IN THE COGNITIVE DOMAIN OF CLASS VIII STUDENTS OF SMPN 1 LUBUK ALUNG. universe [Internet]. 2025 Dec. 9 [cited 2026 Aug. 13];6(1):98-103. Available from: http://universe.ppj.unp.ac.id/index.php/universe/article/view/600