LÓPEZ GONZÁLEZ, Elena María; GUERRERO, Ana Cristina; CARRILLO YÁÑEZ, José; CONTRERAS GONZALEZ, Luis Carlos. Problem solving in textbooks: an instrument for analysis. Advances of Research in Mathematics Education, [S. l.], n. 8, p. 73–94, 2015. DOI: 10.35763/aiem.v1i8.122. Disponível em: https://aiem.es/aiem/article/view/3968. Acesso em: 31 aug. 2026.