EFFECT OF COVID-19 ON STUDENTS PERFORMANCE AT K-12 LEVEL: PLANS FOR STEM EDUCATION. Pakistan Journal of Social Research, [S. l.], v. 3, n. 02, p. 42–48, 2021. DOI: 10.52567/pjsr.v3i02.201. Disponível em: https://ojs.pjsr.com.pk/index.php/PJSR/article/view/201. Acesso em: 6 aug. 2025.