et. al., J. G. D. (2021) “Cognitive Skills Achievement in Mathematics of the Elementary Pre-Service Teachers Using Piaget’s Seven Logical Operations”, Turkish Journal of Computer and Mathematics Education (TURCOMAT), 12(4), pp. 435–440. Available at: https://turcomat.org/index.php/turkbilmat/article/view/524 (Accessed: 6May2024).