FÜLÖP, Ottilia; NAGY, Marcell. Teaching Mathematics Online with Increased Empathy in the COVID-19 Pandemic. Opus et Educatio, [S. l.], v. 8, n. 3, 2021. 10.3311/ope.468. Disponível em: https://journals.bme.hu/oee/article/view/39216. Acesso em: 17 jul. 2025.