Washington, Allyn J. <br/><br/>
Learning to solve problems  a handbook for designing problem-solving learning environments 
David H. Jonassen 
 - 3rd.ed. 
 - Menlo Park, Calif.  Benjamin/Cummings Pub. Co.  c1978 
 - xiv, 574, [108] p.  ill.  25 cm. 
<br/><br/>Includes index. 
<br/><br/><label>ISBN: </label>0805395202 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics.