Council on Technology Teacher Education and the International Technology and Engineering Educators AssociationErnst, Jeremy V.Clark, Aaron C.2011-07-252011-07-252009Journal of Technology Education 20(2): (Spring 2009)ernst.pdfhttp://hdl.handle.net/10919/8433application/pdfenIn CopyrightTechnology-Based Content through Virtual and Physical modeling: A National Research StudyArticle - RefereedJournal of Technology Education