PENINGKATAN KEMAMPUAN BERPIKIR KRITIS MATEMATIS MELALUI PENERAPAN MODEL COOPERATIVE LEARNING TIPE GROUP INVESTIGATION (Studi Pada Siswa SMK Dr. Soetomo Surabaya). Jurnal Ilmiah Soulmath : Jurnal Edukasi Pendidikan Matematika, [S. l.], v. 6, n. 1, p. 25–36, 2018. DOI: 10.25139/sm.v6i1.925. Disponível em: https://ejournal.unitomo.ac.id/index.php/mipa/article/view/925. Acesso em: 17 jun. 2026.