POEHL, Terrie T. Mathematics Play, Problem Solving, and Perseverence. International Journal for Innovation Education and Research, Dhaka, Bangladesh, v. 4, n. 10, p. 149–156, 2016. DOI: 10.31686/ijier.vol4.iss10.606. Disponível em: https://scholarsjournal.net/index.php/ijier/article/view/606.. Acesso em: 3 apr. 2025.