FLICK, M.; KUCHEY, D. Digital Resources of "Floor to Ceiling" Tasks. Ohio Journal of School Mathematics, [S. l.], v. 81, n. 1, 2019. Disponível em: https://www.osu.tests.sfulib4.publicknowledgeproject.org/index.php/OJSM/article/view/6776. Acesso em: 30 apr. 2026.