Reasoning About Multiplication and Area

This Reasoning About Multiplication and Area assessment also includes:

How are area and multiplication related? It turns out that they are one in the same. Use a performance task to assess third grader's ability to reason about area using tiling and multiplication. They must demonstrate their ability to recognize area as multiplying length times width, and then explaining their answers by reasoning about the argument.

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CCSS: Designed
Instructional Ideas

  • Modify the packet and use the sheets as practice, guided instruction, as an assessment, or a combination of all three
  • Encourage, model, and/or instruct individuals to write a multiplication sentence to go with the area models
Classroom Considerations

  • Assumes pupils have already learned how to solve multiplication word problems involving area
  • Expects a basic undersntaind of how to reason mathematically
Pros

  • A great way to link the concept of multiplication arrays to regular area models
  • Includes a student/teacher rubric, as well as an answer key for the solutions
  • incorporates writing about math to explain thinking which is significant in Common Core math standards
Cons

  • None