GORIS, Dayra; MORILLO, Greisy; ACOSTA-HUMÁNEZ, Primitivo. Application of Duval’s theory of semiotic representations using graph theory as a strategy to improve the teaching of matrices. Revista MATUA , [S. l.], v. 11, n. 1, p. 5–22, 2024. Disponível em: https://revistasuniatlanticoeduco.biteca.online/index.php/MATUA/article/view/4490. Acesso em: 2 feb. 2026.