# Primary Math - 2022 Edition Math K

Concepts covered include: Sets (compare and order), quantities, count sequences, numerals, and number names through 20. Compose and decompose numbers to 20 into pairs as well as tens plus ones. Explore numbers 21 to 100 as tens and ones. Model joining and separating sets. Use +, -, and = to write number sentences. Represent and solve addition and subtraction stories with manipulatives, actions, drawings, and number sentences. Practice addition and subtraction in different contexts with words, models, fingers, and numerals. Describe, extend, and find missing terms in repeating shape patterns. Count by 10s. Use a variety of concrete (objects, fingers), pictorial, and symbolic models for addition and subtraction. Use objects to represent geometric figures. Model addition and subtraction stories with number sentences. Understand the = symbol in number sentences. Describe, compare, name, sort, and classify two-and-three-dimensional shapes. Describe and compare lengths and heights. Count and compare numbers of objects in categories. Build skills in comparing sets. Explain why solutions make sense and are correct. Use models to explain reasoning. Apply counting and comparing skills in a wide variety of contexts. Investigate measurement concepts. Interpret data in tally charts and bar graphs. Consult or download the complete Scope and Sequence for a full report of covered topics and concepts.

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