MORAIS, R. dos S. Problem Solving as necessary knowledge for teacher training – Mathematics for teaching. Historia y Memoria de la Educación, [S. l.], n. 11, p. 221–254, 2019. DOI: 10.5944/hme.11.2020.23248. Disponível em: http://revistas.uned.es/index.php/HMe/article/view/23248. Acesso em: 20 jan. 2022.