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Excerpt 2: Categorical Data in Grades K-1 (Pages 5-6)
Progressions for the Common Core State Standards for MathematicsProgressions for the CCSSM: Categorical Data in Grades K-3 and Measurement Data in Grades 2-5
Description: One of a series of documents describing the progression of a topic across several grade levels, informed both by research on children's development and by the structure of mathematics
