HARDMAN, J. An Activity Theory Approach to surfacing the pedagogical object in a primary school mathematics classroom. Outlines. Critical Practice Studies, [S. l.], v. 9, n. 1, p. 53–69, 2007. DOI: 10.7146/ocps.v9i1.2086. Disponível em: https://tidsskrift.dk/outlines/article/view/2086. Acesso em: 20 apr. 2024.