CUSI, A.; MALARA, N. A. Approaching Early Algebra: Teachers’ educational processes and classroom experiences . Quadrante, [S. l.], v. 16, n. 1, p. 57–80, 2007. DOI: 10.48489/quadrante.22812. Disponível em: https://quadrante.apm.pt/article/view/22812. Acesso em: 10 mar. 2025.