SECONDARY SCHOOL STUDENTS’ PERCEPTIONS OF ONLINE LEARNING DURING COVID-19: EFFECTS ON MENTAL WELLBEING AND LEARNING DIFFICULTIES. International Journal of Food and Nutritional Sciences, [S. l.], v. 10, n. 10, p. 705–710, 2021. Disponível em: https://ijfans.org/index.php/Journal/article/view/4303. Acesso em: 17 jul. 2026.