Charles  1949- <br/><br/>
Teaching problem solving :  what why and how / 
Randall Charles, Frank Lester. 
 - Palo Alto:   Dale Seymour.   1982 
 - 59 p. ;  22 cm. 
<br/><br/>Includes index. 
<br/><br/><label>ISBN: </label>0866510826 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Teaching<br/>Mathematics<br/>Problem solving
<br/><br/><label>Dewey Class. No.: </label>510.71