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1
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(2.77 MB)
Martin Hoffman, Arthur B. Powell
Mathematics teaching 126: 55-57.
3
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Richard L. Lehman, Yuya Umezu, Jie Li, Daniel Ely Murnick, James Colaizzi
5
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Akhil Sharma
Granta 97: 130-153.
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Akhil Sharma
The New Yorker 92(14): 78-83.
9
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Marilyn Frankenstein, Arthur B. Powell
Science and Nature 9/10: 100-112.
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Arthur B. Powell, Oshon L. Temple
Teaching Children Mathematics 7(6): 369-375.