Erickson, Tim, <br/><br/>
Get it together :  math problems for groups, grades 4-12 / 
Tim Erickson ; curriculum developers, Bill Finzer ... [and others. 
 - Berkeley, California :  Equals,  (c)1989. 
 - 180 pages :  illustrations ;  28 cm. 
<br/><br/>
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--Problems, exercises, etc.<br/>Mathematics--Study and teaching (Elementary)<br/>Mathematics--Study and teaching (Secondary)<br/>Educational games.
<br/><br/><label>LC Class. No.: </label>QA43  / .G485 1989 QA43