Sierpinska A, Kilpatrick J, Balacheff N, Howson AG, Sfard A, Steinbring H. What is research in mathematics education, and what are its results?. Quadrante [Internet]. 30 de Dezembro de 1993 [citado 20 de Abril de 2025];2(2):89-94. Disponível em: https://quadrante.apm.pt/article/view/22640