Establishing acquisition levels of informal mathematical knowledge before the age of 3: design, construction and validation of a rubric. Edma 0-6: Educación Matemática en la Infancia, [S. l.], v. 6, n. 1, p. 32–52, 2021. DOI: 10.24197/edmain.1.2017.32-52. Disponível em: https://revistas.uva.es/index.php/edmain/article/view/5874. Acesso em: 17 jan. 2026.