The emergence of algebraic thinking: students’ strategies concerning the notion of mathematical equivalence. Edma 0-6: Educación Matemática en la Infancia, [S. l.], v. 8, n. 2, p. 1–16, 2019. DOI: 10.24197/edmain.2.2019.1-16. Disponível em: https://revistas.uva.es/index.php/edmain/article/view/5912. Acesso em: 17 jan. 2026.