RAHAYU, indah; DWI PUTRA, eric. Proses Berpikir Penyelesaian Proyek Bertingkat Medode Flipped Classroom di Masa Pandemi COVID-19. Jurnal Axioma : Jurnal Matematika dan Pembelajaran, [S. l.], v. 6, n. 2, p. 128–138, 2022. DOI: 10.36835/axi.v6i2.1209. Disponível em: http://ejurnal.uij.ac.id/index.php/AXI/article/view/1209. Acesso em: 25 jun. 2022.