TY  - BOOK
AU  - Carruthers,Elizabeth
AU  - Worthington,Maulfry
TI  - Understanding children's mathematical graphics: beginnings in play 
SN  - 9780335237760 (pbk.)
PY  - 2011///
CY  - Maidenhead
PB  - Open University Press
KW  - Mathematics
KW  - Study and teaching (Elementary)
KW  - Activity programs
N1  - Includes bibliographical references (p. [182]-192) and index
ER  -