VELÁSQUEZ ESPINOZA , M. . Systematic review of teacher performance during the COVID-19 pandemic (2020-2021). Sinergias educativas, [S. l.], 2022. DOI: 10.37954/se.vi.274. Disponível em: https://sinergiaseducativas.mx/index.php/revista/article/view/274. Acesso em: 8 nov. 2026.