Krulik, Stephen <br/><br/>
How to use the overhead projector in mathematics education. 

 - Washington :  National Council of Teachers of Mathematics,  1966. 
 - 28p.  : ill.  ; 23cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics<br/>Study and teaching<br/>Audio visual aids<br/>Overhead projection
<br/><br/><label>LC Class. No.: </label>PAM QA11.K79