Ball, Johnny. <br/><br/>
Why pi? / 
Subtitle on cover:  How math applies to everyday life 
Johnny Ball. 
 - London ;  New York :  DK,  2009. 
 - 93 p. :  ill. (chiefly col.), maps (chiefly col.) ;  29 cm. 
<br/><br/> Includes index. 
<br/><br/> Book Links (A.L.A.), June 2010 
<br/><br/> A collection of activities that explore practical math applications from throughout history. 
<br/><br/> 6.5  5-8  Follett Library Resources 
<br/><br/><label>ISBN: </label>0756651646 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics.<br/>Mathematics--History.
<br/><br/><label>Dewey Class. No.: </label>510