Herr, Ted <br/><br/>
Problem solving strategies, Crossing the river with dogs 
 Problem solving strategies, Crossing the river with dogs   : and other mathematical adventures 
/ Ted Herr, Ken Johnson 
 - 1a ed. 
 - Berkeley, California :  Key Curriculum Press,  1994 
 - vii, 486 p. :  il. ;  24 cm. 
<br/><br/><label>ISBN: </label>1559530685 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Matemáticas--Solución de problemas
<br/><br/><label>LC Class. No.: </label>QA63  / H47 1994