DVIVEDI, Sweta. Problems Faced by the School Teachers of Uttar Pradesh in the Transaction of Online Classes during COVID-19 Lockdown. SCHOOL SCIENCE, [S. l.], v. 58, n. 3-4, p. p.31–42, 2020. Disponível em: http://ejournals.ncert.gov.in/index.php/SS/article/view/2718. Acesso em: 19 aug. 2025.