First graders'cognitiverepresentation ofnumber andunderstanding ofplace value:Cross-nationalcomparisons: France,Japan, Korea, Sweden,and the United… Irene T. MiuraYuko OkamotoChungsoon C. Kim1993 год

First graders' cognitive representation of number and understanding of place value: Cross-national comparisons: France, Japan, Korea, Sweden, and the United States.
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