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=**Pre K**= Counting and Cardinality Operations and Algebraic Thinking Measurement and Data Geometry

=Kindergarten= Counting and Cardinality Operations and Algebraic Thinking Number and Operations in Base Ten Measurement and Data Geometry

=**Grade 1**= Operations and Algebraic Thinking Number and Operations in Base Ten Measurement and Data Geometry

=Grade 2= Operations and Algebraic Thinking Number and Operations in Base Ten Measurement and Data Geometry  Operations and Algebraic Thinking 2.OA   **Represent and solve problems involving addition and subtraction.** 1. Use addition and subtraction within 100 to solve one- and two-step word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions//,// e.g., by using drawings and equations with a symbol for the unknown number to represent the problem//.//1 **Add and subtract within 20.** 2. Fluently add and subtract within 20 using mental strategies.2 By end of Grade 2, know from memory all sums of two one-digit numbers. **Work with equal groups of objects to gain foundations for multiplication.** 3. Determine whether a group of objects (up to 20) has an odd or even number of members, e.g., by pairing objects or counting them by 2s; write an equation to express an even number as a sum of two equal addends. 4. Use addition to find the total number of objects arranged in rectangular arrays with up to 5 rows and up to 5 columns; write an equation to express the total as a sum of equal addends.