TY  - BOOK
AU  - Mason,John
AU  - Graham,Alan
AU  - Johnston-Wilder,Sue
TI  - Developing thinking in algebra
PY  - 2005///
CY  - London
PB  - The Open University in association with Paul Chapman Publishing
KW  - Algebra
KW  - Study and teaching
N1  - Includes references and index
ER  -