Addition and subtraction : a cognitive perspective /
Addition and subtraction : a cognitive perspective /
eidted by Thomas P. Carpenter, James M. Moser, Thomas A. Romberg
- Hillsdale, N. J. : Lawrence Erlbaum Associates, 1982
- 245 p. ; 27 cm.
0898591716
Addition
Subtraction
Mathematical ability--Testing
0898591716
Addition
Subtraction
Mathematical ability--Testing
