%0 Journal Article
%A G. Kospentaris
%A P. Spyrou 
%T The Effects of High School Geometry Instruction on the Performance in Spatial Tasks
%J Journal for geometry and graphics
%D 2010
%P 227-244
%V 14
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/JGG_2010_14_2_JGG_2010_14_2_a8/
%F JGG_2010_14_2_JGG_2010_14_2_a8