Dan BennettBooksExploring algebra with the Geometer's SketchpadExploring Geometry With the Geomater's Sketchpad (Book/CDROM)Pythagoras plugged inA Wizard's DozenPythagoras Plugged In Proofs and Problems@ La Geometria Dinamica Par El Siglo XXIExploring Geometry With the Geometer's SketchpadAuthor data: Open Library
