Addition and subtraction a cognitive perspective

Sonraí bibleagrafaíochta
Rannpháirtithe:	Carpenter, Thomas P, eds, Moser, James M., eds, Romberg, Thomas A., eds
Formáid:	LEABHAR
Teanga:	English
Foilsithe / Cruthaithe:	Hillsdale, NJ Lawrence Earlbaum Associates c1982.
Ábhair:	Addition. Subtraction. Mathematical ability > Testing.