TY  - BOOK
AU  - 	Van de Walle, John A.
AU  - Karp, Karen S. 
AU  - Bay,-Williams, Jennifer M.
TI  - Elementary and middle school mathematics: teaching developmentally
SN  - 9781292097695
AV  -  QA 135.5 .V286 2013   
PY  - 2016///
CY  - Boston : 
PB  - Pearson
KW  - Mathematics
KW  - Study and teaching (Elementary)
KW  - Study and teaching (Middle school)
ER  -