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]. 9 Desember 2025 [dikutip 13 Agustus 2026];6(1):98-103. Tersedia pada: http://universe.ppj.unp.ac.id/index.php/universe/article/view/600