Analysis of the Effectiveness of Online Learning Based on Google Classroom on High School Students’ Learning Achievement. Indonesian Journal of Education Research (IJoER), [S. l.], v. 6, n. 1, p. 45–52, 2025. DOI: 10.37251/ijoer.v6i1.1481. Disponível em: https://cahaya-ic.com/index.php/IJoER/article/view/1481. Acesso em: 20 may. 2026.