Investor and philanthropist George Soros established the Open Society Foundations to help countries make the transition from communism. Read more The Open Society Foundations work to build vibrant and tolerant democracies whose governments are accountable and open to the participation of all people. Read more How do foundations decide when a grantee can survive without them?

OPTIMUS PRIME wants YOU to showcase your NASA knowledge in a Glog! Your Mission: Search for Spinoffs in your Environment Spinoffs are like OPTIMUS PRIME- they come from Space to solve problems on Earth! That's why we need you to identify NASA Spinoff technology in your world and test your skills at changing an everyday object into something that will make your world a better place! John Lucyk

How to Leverage the Potential of Mathematical Errors Author(s): Wendy S. Bray Source: Teaching Children Mathematics, Vol. 19, No. 7 (March 2013), pp. 424-431 Published by: National Council of Teachers of Mathematics Stable URL: http://www.jstor.org/stable/10.5951/teacchilmath.19.7.0424 Accessed: 29-01-2016 05:23 UTC 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. This content do 3 on Fri, 29 Jan 2016 05:23:09 UTC 3 on Fri, 29 Jan 201 ll use subject to JSTOR Terms and Conditions 424 March 2013 * teaching children mathematics | Vol. 19, No. 7 Copyright © 2013 The National CounTcilhoisf TceoanchteenrstodfoMwanthleomadateicds,fIrnocm. w1w3w2..n1c7tm0..1or9g3. .A7ll3rigohntsFrreis,e2rv9edJ.an 2016 05:23:09 UTC This material may not be copied or distributed electronicaAllylloruisneasnuy bojtehecrt ftoormJSatTwOithRouTt ewrrmittsenapnedrmCisosniodnitfiroomnsNCTM. x www.nctm.org to Leverage the Potential of Mathematical EIncorporrating arfocus oon students'rmistakses into your instruction can advance their understanding. By Wendy S. Bray elling children that they can learn from their mistakes is common practice. Yet research indicates that many teachers in the United States limit public attention to errors during math- ematics lessons (Bray 2011; Santagata 2005). Some believe that drawing attention to errors publicly may embarrass error m