Junichi Hasewaga - Vol. 22 Num. 1 (2002) | ||
Case studies on the symbolism of difference-finding problems in first grade | 21-28 |
for the learning of mathematics
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Junichi Hasewaga - Vol. 22 Num. 1 (2002) | ||
Case studies on the symbolism of difference-finding problems in first grade | 21-28 |