%0 Journal Article
%A Y. Sugai
%A K. Suzuki 
%T Change over Time in Spatial Ability of Students Entering University -- Impact of Revision of National Curriculum Guidelines up to High Schools
%J Journal for geometry and graphics
%D 2011
%P 101-112
%V 15
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/JGG_2011_15_1_JGG_2011_15_1_a7/
%F JGG_2011_15_1_JGG_2011_15_1_a7