The Effect of The Jigsaw Cooperative Learning Model on Improving Cognitive Learning Outcomes of Grade 9 JHS Students in Static Electricity Material. universe [Internet]. 30 Juni 2024 [dikutip 13 Agustus 2026];5(1):83-7. Tersedia pada: http://universe.ppj.unp.ac.id/index.php/universe/article/view/602