A progression of student symbolizing: Solutions to systems of linear equations. Advances of Research in Mathematics Education, [S. l.], n. 21, p. 45–64, 2022. DOI: 10.35763/aiem21.4237. Disponível em: https://aiem.es/aiem/article/view/n21-smith-lee-zandieh-etal. Acesso em: 20 may. 2026.