Mohd. Tajudin, N., Ahmad Tarmizi, R., Wan Ali, W. Z., & Konting, M. M. (2009). The Effects of Using Graphing Calculators in Teaching and Learning of Mathematics on Students’ Performance. Journal of Science and Mathematics Letters, 1(2), 1–28. Retrieved from https://ojs.upsi.edu.my/index.php/JSML/article/view/331