Kimberling, Clark, 1942- Geometry in action : a discovery approach using the Geometer's Sketchpad / Clark Kimberling. - Emeryville, CA : Key College Pub., c2003. - xiv, 190 p. : ill ; 26 cm. + 1 CD ROM(4 3/4 in.) Includes bibliographical references and index. ISBN: 1931914028 (pbk.) LCCN: 2002030186 Subjects--Uniform Titles: Geometer's Sketchpad. Subjects--Topical Terms: Geometry. LC Class. No.: QA445 / .K556 2003 Dewey Class. No.: 516