ERKINOVNA, T. D. . Mental Arithmetics in the System of Preschool Educatio. International Journal of Innovative Analyses and Emerging Technology, [S. l.], v. 1, n. 3, p. 41–42, 2021. Disponível em: https://openaccessjournals.eu/index.php/ijiaet/article/view/131. Acesso em: 3 jul. 2024.