Carlos Sousa Reis, . M. J. F. T. . “Older, How? The Importance of Practising Educative and Healthy Activities”. Turkish Journal of Computer and Mathematics Education (TURCOMAT), vol. 12, no. 6, Apr. 2021, pp. 1319-2, https://turcomat.org/index.php/turkbilmat/article/view/2472.