Guntur MIS, Anggraini S, Rosnawati R. Optimizing Jigsaw Type of Cooperative Learning Model to Improve Students’ Mathematical Self-Confidence. JM [Internet]. 2020 Jul. 23 [cited 2024 May 3];2(2):122-30. Available from: http://jurnalfkip.unram.ac.id/index.php/MANDALIKA/article/view/1773