Baur, Gregory R <br/><br/>
Helping children learn mathematics  a competency-based laboratory approach 

 - California  Cummings Pub.  1976 
 - 406 p.  Illustration 
<br/><br/><label>Subjects--Topical Terms: </label><br/>EDUCATION
<br/><br/><label>Dewey Class. No.: </label>372.7  / BAU