TY  - BOOK
AU  - Robert J. Wright, David Ellemor-Collins, Pamela D. Tabor
TI  - Developing number knowledge
SN  - 9780857020611
CY  - Australia, US
KW  - algebraic reasoning
KW  - Education
KW  - multiplication
KW  - 2.Nonfiction
N1  - Adult: 18yrs
ER  -