TY  - BOOK
AU  - Yoong, Wong Khoon.
TI  - The mathematics educator (Vol. 13, No.1)
U1  - INTJR 
PY  - 2011///
CY  - Singapore
PB  - Association of Mathematics Educators
KW  - Mathematics
KW  - Study and teaching (Elementary)
KW  - Periodicals
KW  - Mathematical problem-solving
KW  - Preferred representations of middle school algebra students when solving problems
N1  - Includes bibliographical references
ER  -