Santos, E. E. F. dos ., Figueira-Sampaio, A. da S. . and Carrijo, G. A. . (2017) “Mapping Free Educational Software Intended for the Development of Numerical and Algebraic Reasoning”, International Journal of Learning, Teaching and Educational Research, 16(11), pp. 45–66. Available at: https://ijlter.net/index.php/ijlter/article/view/769 (Accessed: 19 April 2026).