HENA TRIANA; MUKHTAR. PENERAPAN MODEL PEMBELAJARAN GROUP INVESTIGATION (GI) BERBANTUAN ALAT PERAGA UNTUK MENINGKATKAN KEMAMPUAN KOMUNIKASI MATEMATIS DI SMPN 1 LABUHAN DELI. Journal of Student Research, [S. l.], v. 2, n. 1, p. 263–275, 2024. DOI: 10.55606/jsr.v2i1.2085. Disponível em: https://ejurnal.stie-trianandra.ac.id/index.php/jsr/article/view/2085. Acesso em: 7 nov. 2024.