The hermetic teaching of mathematics: a critical view based on semiotic representation registers. Práxis Educativa, [S. l.], v. 7, n. 2, p. 379–396, 2012. DOI: 10.5212/PraxEduc.v.7i2.0004. Disponível em: https://revistas.uepg.br/index.php/praxiseducativa/article/view/4144. Acesso em: 31 may. 2026.