Progressions for the Common Core State Standards for MathematicsProgressions for the CCSSM: Number & Operation--Fractions in Grades 3-5

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. The meaning of fractions In Grades 1 and 2, students use fraction language to describe partitions of shapes into equal shares.Grade 3 students start with unit fractions (fractions with numerator 1), which are formed by partitioning a whole into equal parts and taking one part, e.g., if a whole is partitioned into 4 equal parts then each part is 1/4 of the whole, and 4 copies of that part make the whole.

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