Problem solving and critical thinking  Grade 6 /. 

 - Illinois :  McDougal Littell,  2005. 
 - 64 p : ;  28 cm. 
 - McDougal Littell Science .
 - McDougal Littell Science .
<br/><br/>Critical Thinking Skills and Practice -- Problem Solving Strategies and Practice -- Answer Key. 
<br/><br/><label>ISBN: </label>0618413553 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science--Problems, exercises, etc.<br/>Science--Study and Teaching.