WORKING WITH VARIABLE EXPRESSIONS IN PRIMARY SCHOOL MATHEMATICS LESSONS. International Journal of Advance Scientific Research, [S. l.], v. 4, n. 12, p. 72–75, 2024. DOI: 10.37547/ijasr-04-12-12. Disponível em: https://sciencebring.com/index.php/ijasr/article/view/836. Acesso em: 30 aug. 2025.