%0 Journal Article %A S. A. Sorby %T Impact of Changes in Course Methodologies on Improving Spatial Skills %J Journal for geometry and graphics %D 2005 %P 99-105 %V 9 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/JGG_2005_9_1_JGG_2005_9_1_a9/ %F JGG_2005_9_1_JGG_2005_9_1_a9