“PENINGKATAN CRITICAL THINKING DAN COLLABORATIVE SKILL MATEMATIKA MELALUI MODEL GROUP INVESTIGATION BERBANTUAN MAGIC BALL”. Naturalistic: Jurnal Kajian dan Penelitian Pendidikan dan Pembelajaran 2, no. 2 (April 23, 2018): 129–138. Accessed January 28, 2026. https://journal.umtas.ac.id/naturalistic/article/view/204.