Teaching and learning proof across the grades :  a K-16 perspective / 
edited by Despina A. Stylianou, Maria L. Blanton, and Eric J. Knuth. 
 - New York :  Routledge,  2009. 
 - xx, 388 p. :  ill. ;  24 cm. 
 - Studies in mathematical thinking and learning. .
 - Studies in mathematical thinking and learning. .
<br/><br/> 'National Council of Teachers of Mathematics.' 
<br/><br/>Includes bibliographical references (p. 371-385) and index. 
<br/><br/><label>ISBN: </label>9780415989848 (hbk.)  RM508.30 0415989841 (hbk.) 9780415887311 (pbk.) 0415887311 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Logic, Symbolic and mathematical--Study and teaching.<br/>Proof theory--Study and teaching.<br/>Mathematical analysis--Study and teaching.<br/>Problem solving--Study and teaching.