Guiding children's learning of mathematics 
Kennedy, Leonard M. 
 - Fourth edition. 
 -  Wadsworth Publishing Company.  1984 
 - ix, 550 pages. 
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<br/><br/><label>ISBN: </label>0-534-02989-2 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics -- Study and teaching (Elementary)
<br/><br/><label>Dewey Class. No.: </label>372.7 K38 1984