Sullivan, P. <br/><br/>
Student difficulties with reading and interpreting linear scales / 
Peter Sullivan. 
 -  [1982). 
 - p. 149-158. 
<br/><br/> Offprint from : Proceedings of the 6th Annual Conference of the Mathematics Education Research Group of Australia / edited by C. J. Irons, 1982. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--Study and teaching (Secondary)--Papua New Guinea.<br/>Number line--Study and teaching (Secondary)--Papua New Guinea.