Length measures: proposal to understand the use of the standard ruler. Edma 0-6: Educación Matemática en la Infancia, [S. l.], v. 7, n. 2, p. 67–75, 2021. DOI: 10.24197/edmain.2.2018.67-75. Disponível em: https://revistas.uva.es/index.php/edmain/article/view/5900. Acesso em: 4 dec. 2025.