Hardhatting in a geo-world. 

 - Fresno, CA :  AIMS Education Foundation,  2004. 
 - 177 p. :  ill ;  28 cm. 
 - AIMS Activities. .
 - AIMS Activities. .
<br/><br/> Grades 3-5. 
<br/><br/><label>ISBN: </label>1932093109 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geometry.<br/>Mathematics--Study and teaching (Elementary)<br/>Mathematics--Study and teaching (Middle School)