“Pragmatic Review of Literature Associated with Projectile Motion Perceived as Difficult to Teach by Some South African Teachers”, Mediterr. J. Soc. Sci., vol. 5, no. 8, p. 441, May 2014, Accessed: Nov. 22, 2024. [Online]. Available: https://www.richtmann.org/journal/index.php/mjss/article/view/2577