Krajcik, Joseph S. Teaching children science : a project-based approach / Joseph S. Krajcik, Charlene M. Czerniak, Carl Berger. - Boston : McGraw-Hill, c1999. - xiv, 338 p. : ill. ; 26 cm. Includes bibliographical references and index. ISBN: 0070360073 LCCN: 98039798 Subjects--Topical Terms: Science--Study and teaching. LC Class. No.: Q181 / .K73 1999 Dewey Class. No.: 507/.1