Progressions for the Common Core State Standards for MathematicsDraft K Progression on Counting & Cardinality and K-5 Progression on Operations & Algebraic Thinking

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. In Grade 6, students will begin to view expressions not just as calculation recipes but as entities in their own right, which can be described in terms of their parts. Students' varied work throughout elementary school with equations with unknowns in all locations and in writing equations to decompose a given number into many pairs of addends or many pairs of factors are also important foundations for understanding equations and for solving equations with algebraic methods.

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