Growth in Number Systems Knowledge across grades for the bottom (Low), two middle (Average), and top (High) quartiles on the seventh grade numeracy measure.
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posted on 2013-01-30, 02:31 authored by David C. Geary, Mary K. Hoard, Lara Nugent, Drew H. BaileyThe score is the percentage of the maximum possible score across the four tasks that composed the Number System Knowledge factor.
