Piyavadee Wongyai <br/><br/>
An investigation of two methods of instruction in solving standard textbook word problems at the second-grade level (pratom 2) in Thailand  [microform] / 
by Piyavadee Wongyai 
 - Ann Arbor, Mich. :  University Microfilms International ,  1981 
 - 2 microfiches ;  11 x 15 cm. 
<br/><br/>Thesis (Ph.D.)-Indiana University, 1980 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--Study and teaching (Elementary)<br/>Problem solving