Costa, António Pedro, and Estela Barreto da Costa. “Contributions to Educational Software Development Methodology Based on User Centered Design”. Em Teia | Revista de Educação Matemática e Tecnológica Iberoamericana 4, no. 2 (November 17, 2013). Accessed July 30, 2026. https://periodicos.ufpe.br/revistas/emteia/article/view/2229.