A comparative study about compound proportionality in Spanish Secondary textbooks under LOGSE-LOE-LOMCE. Advances of Research in Mathematics Education, [S. l.], n. 8, p. 95–115, 2015. DOI: 10.35763/aiem.v1i8.119. Disponível em: https://aiem.es/aiem/article/view/3969. Acesso em: 20 may. 2026.