QUINDE CHALÉN, D. F. .; ALCÍVAR PAZMIÑO, K. L. .; VALLEJO PALACIOS, M. C. . Mathematical Development in Early Childhood: Challenges in Urban-Marginal Contexts of Guayaquil. Espirales Revista Multidisciplinaria de investigación, [S. l.], v. 9, n. 54, p. 69–81, 2025. DOI: 10.31876/er.v9i54.892. Disponível em: https://revistaespirales.com/index.php/es/article/view/892. Acesso em: 19 apr. 2026.