SELVI, Deah; DAHLIA, Agus. Analisis Kesulitan Guru Matematika Dalam Pembelajaran Online Saat Pandemi COVID-19 . Kognitif: Jurnal Riset HOTS Pendidikan Matematika, [S. l.], v. 1, n. 2, p. 156–163, 2021. DOI: 10.51574/kognitif.v1i2.111. Disponível em: https://etdci.org/journal/kognitif/article/view/111. Acesso em: 27 jul. 2025.