MACHABA, M. M.; LENYAI, M. E. Aspects that Pose Challenges in the Teaching of Mathematics at Grade 3 Level. Mediterranean Journal of Social Sciences, [S. l.], v. 5, n. 2, p. 535, 2014. DisponĂ­vel em: https://www.richtmann.org/journal/index.php/mjss/article/view/2017. Acesso em: 22 mar. 2023.