TY  - JOUR
AU  - Griffin, P
AU  - Callingham, R
Y2  - 2014/05/21
Y1  - 2006/05/01
SN  - 0021-8251
UR  - http://hdl.handle.net/11343/28418
LA  - English
PB  - NATL COUNCIL TEACHERS MATHEMATICS-NCTM
KW  - Curriculum and Pedagogy
T1  - A 20-year study of mathematics achievement
DO  - 10.2307/30035057
IS  - Journal for Research in Mathematics Education
VL  - 37
IS  - 3
SP  - 167-186
L1  - /bitstream/handle/11343/28418/255609_56051.pdf?sequence=1&isAllowed=n
ER  -