K. TSAFE, A. Teacher pedagogical knowledge in mathematics: a tool for addressing learning problems. Scientific Journal of Pure and Applied Sciences, [S. l.], v. 2, n. 1, p. 35-41, 2013. Disponível em: http://sjournals.com/index.php/sjpas/article/view/1011. Acesso em: 23 jul. 2024.