Use Area Models to Assess the Reasonableness of Answers to Problems Involving Mixed-Numbers

This Use Area Models to Assess the Reasonableness of Answers to Problems Involving Mixed-Numbers video also includes:

Learners are introduced to the idea of checking for reasonableness when adding and subtracting mixed numbers. The problem is solved using visuals, while the answer is also checked with reason. Common mistakes are brought up and explains what makes an answer unreasonable.

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CCSS: Designed
Instructional Ideas

  • Good to use as an introduction before teaching mixed numbers
Classroom Considerations

  • Use the other videos in the series for additional practice with word problems and fractions
Pros

  • Shows the visual representation alongside the mathematical calculation of the problem
Cons

  • None
Common Core