Eicholz, Robert E <br/><br/>
Investigating school mathematics  

 - Menlo Park, CA :  Addison-Wesley,  c1973. 
 - 1 v. (various pagings) :  colored. illustrations. 
<br/><br/> Includes index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--1901-<br/>Mathematics--Study and teaching (Elementary)