TY  - BOOK
AU  -  Van de Walle, John A.
TI  - Elementary and middle school mathematics teaching developmentally/ John A. Van de Walle, Karen S. Karp, Jennifer M. Bay-William
SN  - 9780205690053
U1  - 510.712 VAN 
CY  - Boston : Pearson/Allyn and Bacon Publishers, 2010.
KW  - Mathematics --Study and teaching (Elementary) Mathematics --Study and teaching (Middle school)
ER  -