Write and Solve Subtraction Equations Using a Bar Model

This Write and Solve Subtraction Equations Using a Bar Model video also includes:

Subtraction means take away, but the bar model shows how subtraction relates to addition. The bar model organizes the parts of an equation into a visual model. Using fact families, your mathematicians will be able to organize the equation into something they can solve. Video is second in a series of four. If using as a series, some videos introduce inverse operation while this one does not. Other videos practice addition, multiplication, and division with bar model. 

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CCSS: Designed
Classroom Considerations

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Pros

  • Uses subtraction vocabulary minuend and subtrahend 
  • Introduces fact families
Cons

  • Does not acknowledge inverse operations
  • Only goes through two examples
Common Core