Rational numbers in primary school in Portugal (1930-1974)

• Autor(a) principal: Candeias, Rui Pedro Campos Bento Barros
• Data de Publicação: 2022
• Outros Autores: Monteiro, Maria Cecília Soares de Morais, Almeida, Mária Cristina Ribeiro Correia de
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Zetetiké (Online)
• Texto Completo: https://periodicos.sbu.unicamp.br/ojs/index.php/zetetike/article/view/8667892
• topic: Formação de professores; Ensino primário; Números racionais não negativos; História da educação matemática; Teacher training; Primary school; Non-negative rational numbers; History of mathematics education

The work focuses on the approach to non-negative rational numbers explored in official curriculum documents and textbooks for the initial training courses of primary school teachers. The analysis was centered in the curricula of those courses, the primary education curricula and four manuals by reference authors in teacher training in Portugal, at the time. A document analysis was carried out, with a historical perspective. The first approach and definition of rational numbers is done through the measurement of quantities, but, implicitly, the manuals also present different meanings for fractions in context. In the manuals the importance given to the different representations is highlighted, for the presentation of the definition of rational number and in two of these manuals the importance given to the different contexts for the fractions is highlighted. The analysed manuals follow the instructions of the official documents, in the proposed approach to rational numbers. However, it is also possible to observe some autonomy of the authors of the manuals in relation to the official curricular documents.