Arthur Benjamin ; illustrations by Natalya St. Clair. <br/><br/>
The magic of math:  solving for x and figuring 

 - New York:  Basic Books, a member of the Perseus Books Group,  2015 
 - 321 p.;   22 cm. 
<br/><br/><label>ISBN: </label>978-0-465-09621-3 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mental arithmetic--study and teaching<br/>Mathematics
<br/><br/><label>LC Class. No.: </label>QA 111 B468 2015