ANDREW, SONA V. Understanding Rational Numbers : Are the Textbooks helping?. THE PRIMARY TEACHER, [S. l.], v. 41, n. `1, p. p.45–54, 2016. Disponível em: http://ejournals.ncert.gov.in/index.php/tpt/article/view/1267. Acesso em: 18 aug. 2025.