DHANAPAL, S.; KANAPATHY, R.; ZI SHAN, E. W. A Comparison of the Effectiveness between Free and Structured Play in Enhancing Students’ Problem Solving Skills in Mathematics. Asian Journal of Education and e-Learning, [S. l.], v. 2, n. 4, 2014. Disponível em: https://ajouronline.com/index.php/AJEEL/article/view/1446. Acesso em: 20 apr. 2024.