| Robert Thomas - Vol. 7 Num. 1 (1987) | ||
| Cartesian and non-Cartesian thinking: reflections on the learning of mathematics | 23-29 | |
| Robert Thomas - Vol. 16 Num. 2 (1996) | ||
| Proto-mathematics and/or real mathematics | 11-18 | |
| Robert Thomas - Vol. 17 Num. 2 (1997) | ||
| An exchange about word problems | 21-22 | |
for the learning of mathematics
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