Commemorating One-Year of the COVID-19 Pandemic: Indonesian and International Issues of Secondary and Tertiary Mathematics Learning. International Journal of Studies in Education and Science, [S. l.], v. 2, n. 1, p. 18–35, 2021. Disponível em: https://ijses.net/index.php/ijses/article/view/2134. Acesso em: 30 aug. 2025.