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Griffin, Sharon – Early Childhood Research Quarterly, 2004
Number sense is easy to recognize but difficult to define and hence, to teach. In this article, number sense is defined in terms of the knowledge known to underline it, as identified in cognitive developmental theory and research. A preK-2 mathematics program, called Number Worlds, that was specifically developed to teach this knowledge is…
Descriptors: Mathematics Instruction, Early Childhood Education, Numeracy, Learning Theories

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