| 000 | 00578naa a2200145 4500 | ||
|---|---|---|---|
| 001 | 182842 | ||
| 090 | _a182842 | ||
| 100 | _a20040322 y0pory5003 ba | ||
| 200 | 1 |
_aInterpretations of number operations and symbolic representations of addition and subtraction _fJames Weaver |
|
| 463 | 1 |
_eLawrence Erlbaum, 1982 _vNew York _vp. 60-66 _tAddition and subtraction : a cognitive perspective _015015 |
|
| 606 | 1 | _aPsicologia Educacional | |
| 686 | _a3500 - Psicologia Educacional | ||
| 700 | 1 |
_aWeaver _bJames |
|
| 856 | 4 | _uhttps://catalogo.ispa.pt/opac/biblioteca/localizacao_doc/e2.htm | |