Saeid Haghjoo and Ebrahim Reyhani and Fahimeh Kolahdouz, Evaluating the Understanding of the University Students (Basic Sciences and Engineering) about the Numerical Representation of the Average Rate of Change. journal = {International Journal of Educational and Pedagogical Sciences}, [online]. World Academy of Science, Engineering and Technology. January 2020, vol. 158(2). 111 - 121 [viewed 19 September 2024]. Available from: https://publications.waset.org/pdf/10011068.