Resources
Greene, R. (1997). When a line bends—a shape begins. Boston: Houghton Mifflin.
iKnowthat.com. (2008). Geometry Workshop. Retrieved April 17, 2008 from http://www.iknowthat.com/com/App?File=GeometryWorkbench.htm&Type=D&App=GeometryWorkbench&SkipGuestWarning=true
Mathsteacher.com. (2007). Quadrilaterals. Retrieved on April 17, 2008, from http://www.mathsteacher.com.au/year7/ch09_polygons/04_quad/quad.htm
Ries, F. (1998). GeoJr. Retrieved April 17, 2008 from http://www.galaxy.gmu.edu/~devsuper/test8/geojrmain.html
Robinson, M. (2000). Ambleweb Shape Design. Retrieved April 17, 2008 from http://www.amblesideprimary.com/ambleweb/shapebase/db.htm
Rocklin, J. (2000). The Incredibly Awesome Box: a story about 3-D shapes. New York: Scholastic.
Scott Resources. (2001). Clever Catch: shapes. Fort Collins, CO.
