MATOUQ, Nadia Hamlan. The Effectiveness of Using Mental Computation to Develop Some Number Sense Skills among third-grade Primary Students. Journal of Educational and Psychological Sciences, New Mexico, United States, v. 4, n. 43, p. 60–46, 2020. DOI: 10.26389/AJSRP.H150620. Disponível em: https://www.ajsrp.ojsexpert.com/index.php/jeps/article/view/3050. Acesso em: 21 dec. 2025.