TY  - BOOK
AU  - Kirkby,David
TI  - Developing numeracy: differentiated activities for mixed ability classes 
T2  - Folens developing numeracy
SN  - 1862025819
PY  - 1999///
CY  - England
PB  - Folens
KW  - Elementary education in spesific subjects
KW  - Mathematics
ER  -