Math Advantage / 
G. M Burton and other. 
 - Orlando :  Harcourt Brace,  1999. 
 - xxiii, 143 p. :  ill. ;  28 cm. 
<br/><br/><label>ISBN: </label>0-15-311437-1 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--Study and teaching (Middle school)<br/>Mathematics--Study and teaching (Elementary)<br/>Arithmetic--Study and teaching (Primary)