TY  - BOOK
AU  - Van de Walle, John A.
AU  - Karp, Karen,
AU  - Bay-Williams, Jennifer M.
AU  - Wray, Jonathan A.
TI  - Elementary and middle school mathematics: teaching developmentally 
SN  - 9780134802084 (paperback)
AV  - QA135.6 V22 2019
U1  - 510.712 
PY  - 2019///]
CY  - Boston
PB  - Pearson
KW  - Mathematics
KW  - Study and teaching (Elementary)
KW  - Study and teaching (Middle school)
N1  - Includes bibliographical references and index
ER  -