Math Lessons | Addition and Subtraction - less than 20 for Ages 8-9

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    • Key Ideas and Details/ Craft and Structure
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    • 6 & 7
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  • Operations and Algebraic Thinking Within 5  
    • Addition Story Problems (#'s 1-5)
    • Subtraction Story Problems (#'s 1-5)
• Math  
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    • Counting and Numbers
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    • One More and One Less
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  • Additional Practice with Numbers up to 20  
    • Addition and Subtraction
    • Addition and Subtraction Story Problems
    • Composing Numbers
  • Foundations in Operations Within 100  
    • Counting
    • Place Value
    • Addition and Subtraction - less than 20
    • Addition and Subtraction 20-100
  • Applications in Operations Within 100  
    • Word Problems Sums and Differences within 20
    • Thinking Deeper about Addition and Subtraction—The Unknown Number
    • Make it Easy Strategies
  • Foundations and Applications in Measuring, Time and Data  
    • How to Measure Using the World Around You
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    • Keeping Track of Data
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    • Keeping Track of Information
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  • Foundations in Operations Within 1000  
    • Place Value
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    • Addition and Subtraction within 100
    • Addition and Subtraction within 1,000
  • Applications in Operations Within 1000  
    • Word Problems Sums and Differences within 100
    • Thinking Deeper about Addition and Subtraction—The Unknown Number
    • Equal Groups
  • Foundations in Numbers and Fractions  
    • Rounding
    • Adding and Subtracting to 1,000
    • Making and Representing Fractions
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    • Multiplication Facts
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