MAURILLA, C. A.; DARMAWAN, P. Bridging abstract to concrete: The SPLDV board as an innovative tool for teaching systems of linear equations. Polyhedron International Journal in Mathematics Education, [S. l.], v. 3, n. 2, p. 127–138, 2025. DOI: 10.59965/pijme.v3i2.260. Disponível em: https://nakiscience.com/index.php/pijme/article/view/260. Acesso em: 2 feb. 2026.