SKOUMPOURDI, Chrysanthi. Manipulative bulletin board for early categorization. Teaching Mathematics and Computer Science, [S. l.], v. 9, n. 1, p. 1–12, 2011. DOI: 10.5485/TMCS.2011.0268. Disponível em: https://ojs.lib.unideb.hu/tmcs/article/view/14883. Acesso em: 27 sep. 2024.