“The Effect of Flipped Classroom Combination of Cooperative Methods and Group Investigation Type (MKGI) on Mathematical Communication Skills”. Buana Pendidikan: Jurnal Fakultas Keguruan dan Ilmu Pendidikan Unipa Surabaya 22, no. 1 (February 25, 2026): 33–47. Accessed June 4, 2026. https://jurnal.unipasby.ac.id/jurnal_buana_pendidikan/article/view/11077.