TY  - BOOK
AU  -  Hatfield, Larry L
TI  - Investigating mathematics : an interactive approach
SN  - 067513160x
U1  - 510 
PY  - 1994///
CY  - USA
PB  - Glencoe/McGraw-Hill
KW  - Education
KW  - Mathematics
N1  - starting points; 
surveys and data analysis;
relative size of numbers;
spatial  visualization;
what are my chances?;
size and shape in the plane;
thinking about functions; 
growth and decay

ER  -