Development of proportional reasoning: Where young children go wrong.
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1997 ◽
Vol 89
(2)
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pp. 309-317
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1984 ◽
Vol 15
(1)
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pp. 37-43
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1994 ◽
Vol 3
(1)
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pp. 79-88
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1996 ◽
Vol 5
(4)
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pp. 17-30
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1997 ◽
Vol 6
(4)
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pp. 34-47
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2019 ◽
Vol 50
(1)
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pp. 34-52