Amoakoh, Patrick Kwabena. “Effectiveness of Handheld Calculator Usage on Students’ Performance in the Learning of Algebra, Speed and Accuracy Factors”. RA Journal Of Applied Research 8, no. 9 (September 12, 2022): 693–700. Accessed November 25, 2024. http://rajournals.in/index.php/rajar/article/view/998.