K-2 Place Value Longitudinal Study (2017-2019)
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下载链接：
http://drum.lib.umd.edu/handle/1903/21495
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资源简介：
Children were tested with a battery of place value concept tasks as well as mathematics outcomes, in kindergarten, first and second grades.
提供机构：
Digital Repository at the University of Maryland
创建时间：
2018-11-27
