Materiála du geavahussii : Mathematics learning in early childhood [electronic resource] : paths toward excellence and equity / Christopher T. Cross, Taniesha A. Woods, and Heidi Schweingruber, editors ; Committee on Early Childhood Mathematics, Center for Education, Division of Behavioral and Social Sciences and Education.

Bajilčálus : Mathematics learning in early childhood [electronic resource] : paths toward excellence and equity / Christopher T. Cross, Taniesha A. Woods, and Heidi Schweingruber, editors ; Committee on Early Childhood Mathematics, Center for Education, Division of Behavioral and Social Sciences and Education.

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