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Common Core: Math
CCLS - Math: 2.OA.2
- Operations And Algebraic Thinking
- Add And Subtract Within 20.
- State Standard:
- 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.
- Welcome to “Math Studio Talk” a video series that provides games, activities and models to help students develop flexible thinking and deep understanding of math concepts from kindergarten to Grade 5...
- Now that students have practiced their kindergarten and Grade 1 skills, they are ready to become more ﬂuent with addition problems, such as 8 + 7 and 5 + 9, where they must cross the ten. In Lesson 3...
- In this first module of Grade 2, students make significant progress towards fluency with sums and differences within 20 (2.OA.2). Fluency, coupled with a fundamental grasp of place value, rests on...
- Objective: Decompose to subtract from a ten when subtracting within 20 and apply to one-step word problems.
- Objective: Make a ten to add and subtract within 20.
- Objective: Make a ten to add within 20.
- Objective: Make number bonds through ten with a subtraction focus and apply to one-step word problems.
- Objective: Make number bonds of ten.
- Grade 2 Module 1: Sums and Differences to 100 Module 1 sets the foundation for students to master sums and differences to 20. Students subsequently apply these skills to fluently add one-digit to two...