Amevor, G. et al. 2021. Analysis of Rural-Based Pre-Service Teachers Spatial-Visualisation Skills in Problem Solving in Vector Calculus Using MATLAB. International Journal of Emerging Technologies in Learning (iJET). 16, 10 (May 2021), pp. 125–149. DOI:https://doi.org/10.3991/ijet.v16i10.19269.