Bacakoğlu, T. Y. and Işık Tertemiz, N. . (2022) “Students’ Mental Addition Strategies and the Effects of Strategy Training: A Longitudinal Study”, International Electronic Journal of Elementary Education, 14(4), pp. 557–572. Available at: https://iejee.com/index.php/IEJEE/article/view/1823 (Accessed: 30January2025).