TY  - BOOK
AU  - Clements,Douglas H.
AU  - Sarama,Julie
TI  - Learning and teaching early math: the learning trajectories approach 
T2  - Studies in mathematical thinking and learning
SN  - 9780203883389 (electronic bk.)
PY  - 2009///
CY  - New York
PB  - Routledge
KW  - Mathematics
KW  - Study and teaching (Early childhood)
KW  - Educational psychology
KW  - Child development
KW  - Curriculum planning
N1  - Description based on print version record; Includes bibliographical references (p. 295-316) and index
UR  - http://www.netlibrary.com.libraryumpsa.idm.oclc.org/urlapi.asp?action=summary&v=1&bookid=266999
ER  -