Neuschwander, Cindy. <br/><br/>
Sir Cumference and the Viking's map :  a math adventure / 
Cindy Neuschwander ; illustrated by Wayne Geehan. 
 - Watertown, MA :  Charlesbridge,  2012. 
 - 32 p. :  col. ill., col. maps ;  25 cm. 
<br/><br/> Horn Book  Publishers Weekly  Horn Book, November 2012  Publishers Weekly, January 2012 
<br/><br/> Cousins Radius and Per must decode a numbered grid on a map to figure out the secret of the Viking's X and Y axes. 
<br/><br/> 4.  3-6 
<br/><br/><br/>English. 
<br/><br/><label>ISBN: </label>9781570917929 
<br/><br/><label>LCCN: </label>2011000865 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Coordinates--Juvenile literature.<br/>Geometry, Analytic--Juvenile literature.<br/>Coordinates.<br/>Geometry, Analytic.<br/>Analytic geometry.
<br/><br/><label>Index Terms--Genre/Form: </label><br/>Picture books for children.
<br/><br/><label>Dewey Class. No.: </label>516.3 NEU/O