TY  - BOOK
AU  - John A. Van de Walle, Karen S. Karp and Jennifer M. Bay-Williams
TI  - Elementary and middle school mathematics : teaching developmentally
SN  - 9781292331393 (pbk)
U1  - 510.712 
PY  - 2020///
CY  - Harlow
PB  - Pearson
KW  - Mathematics--Study and teaching (Middle school)
N1  - 1. Teaching mathematics: foundation and perspective 
2. Development of mathematical concepts and procedures
ER  -