Lemonidis, Charalampas <br/><br/>
Mental computation and estimation :  implications for mathematics education research, teaching and learning / 
Charalampos Lemonidis 
 - London :  Routledge,  2016. 
 - 242 pages :  tables ;  24 cm. 
<br/><br/> Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>9781138938434 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mental arithmetic.<br/>Arithmetic-- Study and teaching.<br/> Reasoning.
<br/><br/><label>Dewey Class. No.: </label>513.9   / L544m