RANGEL RUÍZ, Luzdari; ROA FUENTES, Solange; GARCÍA TORRES, Erika. APOS Theory and the Teaching of  Linear Algebra: Engineering Students’ Understanding of Systems of Linear Equations and Their Solution Sets. Innovaciencia, [S. l.], v. 14, n. 1, 2026. DOI: 10.15649/2346075X.5861. Disponível em: https://revistas.udes.edu.co/innovaciencia/article/view/5861. Acesso em: 13 may. 2026.