Wilson J. Pinzón, Wilson Gordillo., and Miguel A. Avila. “Gesture As A Semiotic Means Of Objectifying The Slope, In A Calculus Course”. Elementary Education Online 20, no. 6 (December 19, 2023): 1773–1781. Accessed July 23, 2024. https://ilkogretim-online.org/index.php/pub/article/view/5225.