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1721
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1722
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1723
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1724
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1725
-
1726
Students, scholars, and parents an exploration of the ideas behind the new math and other curriculum reform.
Baskı/Yayın Bilgisi 1966Kitap -
1727
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1728
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1729
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1730
The development of mathematical activity in children the place of the problem in this development
Baskı/Yayın Bilgisi 1966Kitap