PENINGKATAN CRITICAL THINKING DAN COLLABORATIVE SKILL MATEMATIKA MELALUI MODEL GROUP INVESTIGATION BERBANTUAN MAGIC BALL. Naturalistic: Jurnal Kajian dan Penelitian Pendidikan dan Pembelajaran, [S. l.], v. 2, n. 2, p. 129–138, 2018. Disponível em: https://journal.umtas.ac.id/naturalistic/article/view/204. Acesso em: 28 jan. 2026.