THE EFFECT OF JIGSAW TYPE OF COOPERATIVE LEARNING MODEL ON COGNITIVE LEARNING OUTCOMES OF CLASS VIII STUDENTS SMPN 40 PADANG. universe [Internet]. 30 Juni 2026 [dikutip 13 Agustus 2026];7(1):88-93. Tersedia pada: http://universe.ppj.unp.ac.id/index.php/universe/article/view/654