Problem-Situations on Centralization Measures in Chilean Primary Education Textbooks. Advances of Research in Mathematics Education, [S. l.], n. 27, p. 129–156, 2025. DOI: 10.35763/aiem27.6124. Disponível em: https://aiem.es/aiem/article/view/v27-parra-lopez-martin-etal. Acesso em: 20 may. 2026.