Council on Technology Teacher Education and the International Technology and Engineering Educators AssociationGustafson, Brenda J.Rowell, Patricia M.Rose, Dawn P.2011-07-252011-07-251999Journal of Technology Education 11(1): (Fall 1999)gustafson.pdfhttp://hdl.handle.net/10919/8225application/pdfenIn CopyrightElementary Children's Conceptions of Structural Stability: A Three Year StudyArticle - RefereedJournal of Technology Education