| Helen Featherstone - Vol. 20 Num. 2 (2000) | ||
| "-Pat + Pat = 0": intellectual play in elementary mathematics | 14-23 | |
| Helen Featherstone - Vol. 22 Num. 2 (2002) | ||
| "The word I would use is aesthetic": reading David Hawkins | 24-27 | |
for the learning of mathematics
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