KAY, Robin H.; KNAACK, Liesel. Exploring the impact of learning objects in middle school mathematics and science classrooms: A formative analysis. Canadian Journal of Learning and Technology, [S. l.], v. 34, n. 1, 2008. DOI: 10.21432/T2459C. Disponível em: https://cjlt.ca/index.php/cjlt/article/view/26430. Acesso em: 1 apr. 2026.