The effect of cooperative learning on biology achievement and bullying behavior among second grade students. Journal of the College of Basic Education, [S. l.], v. 20, n. 84, p. 249–281, 2022. DOI: 10.35950/cbej.v20i84.8273. Disponível em: https://cbej.uomustansiriyah.edu.iq/index.php/cbej/article/view/8273.. Acesso em: 3 jul. 2024.