TY  - BOOK
AU  - JOHN HOLDING
TI  - THE INVESTIGATIONS BOOK
SN  - 0521409446
PY  - 1991///
PB  - CAMBRIDGE UNIVERSITY PRESS
N1  - THE BOOK TEACHES US ON HOW TO ACHIEVE A GOAL BY SOLVINGS PROBLEMS APPROACH IN THE MATHEMATICS CLASSROOM AND IDEA FOR EXTENSIONS
ER  -