Learning Disability Quarterly, Vol. 37, No. 4, Special Series: Reading: Part Two of Two (NOVEMBER 2014), pp. 241-251 (11 pages) This purpose of this study was to examine the reliability and validity ...
129 first- and second-grade students were individually tested on 13 measurement and conservation items. Contrary to Piaget's conclusions, children in the earliest stages of development of conservation ...
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