Children's Conceptual Structures for Multidigit Numbers and Methods of Multidigit Addition and Subtraction Author(s): Karen C. Fuson, Diana Wearne, James C. Hiebert, Hanlie G. Murray, Pieter G. Human, Alwyn I. Olivier, Thomas P. Carpenter and Elizabeth Fennema Reviewed work(s): Source: Journal for Research in Mathematics Education, Vol. 28, No. 2 (Mar., 1997), pp. 130- 162 Published by: National Council of Teachers of Mathematics Stable URL: http://www.jstor.org/stable/749759 . Accessed: 22/06/2012 03:38 Your use of the JSTOR archive indicates your acceptance of the Terms & Conditions of Use, available at . http://www.jstor.org/page/info/about/policies/terms.jsp JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact support@jstor.org. National Council of Teachers of Mathematics is collaborating with JSTOR to digitize, preserve and extend access to Journal for Research in Mathematics Education. http://www.jstor.org