Unit 3 Topic 2: Introducing Subtraction

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2.1 Introducing Subtraction

Introducing Subtraction 

• Visualizing and retelling the action in subtraction situations involving removal
• Subtracting one number from another, with initial totals up to 12
• Using numbers and standard notation (+, −, =) to record

Classroom Routine - Start With/Get To: Counting Forward

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2.2 Solving Subtraction Story Problems

Solving Subtraction Story Problems 

• Visualizing and retelling the action in addition and subtraction situations involving removal
• Developing strategies for solving subtraction (removal) problems
• Modeling the action of subtraction (removal) problem with counters or drawings
• Developing methods for recording subtraction (removal) strategies

Classroom Routine - Start With/Get To: Counting Forward

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2.3 Subtraction Strategies

Subtraction Strategies 

• Visualizing and retelling the action in subtraction situations involving removal
• Developing strategies for solving subtraction (removal) problems
• Modeling the action of subtraction (removal) problem with counters or drawings
• Developing methods for recording subtraction (removal) strategies

Classroom Routine - Morning Meeting: Can Everyone Have a Partner?

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