Motivating Learning in Mathematics Through Collaborative Problem Solving: A Focus on Using Rich Tasks. Journal of Education and Educational Development, Pakistan, v. 1, n. 1, 2020. DOI: 10.22555/joeed.v1i1.232. Disponível em: https://journals.iobm.edu.pk/index.php/joeed/article/view/232. Acesso em: 4 apr. 2026.