NWAFOR, S. C.; OKONKWO, H. C.; ONUIGWE, B. U. Enhancing Secondary School Students’ Achievement in Chemistry Using Collaborative Instructional Strategy. Journal of Digital Learning and Education, Deli Serdang, Indonesia, v. 3, n. 3, p. 210-217, 2023. DOI: 10.52562/jdle.v3i3.818. Disponível em: https://journal.moripublishing.com/index.php/jdle/article/view/818. Acesso em: 21 apr. 2026.