MA.4.G.3.2Archived Standard

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Justify the formula for the area of the rectangle "area = base x height".

Remarks

The students should be able to justify the formula for the area of the rectangle by explaining how counting units to find area of a rectangle is related to finding the area by multiplying.

 

The idea of the area of a rectangle as "base x height" rather than "length x width" is useful in connecting to other area formulas.

 

General Information
Subject Area: X-Mathematics (former standards - 2008)
Grade: 4
Body of Knowledge: Geometry
Idea: Level 2: Basic Application of Skills & Concepts
Big Idea: BIG IDEA 3 - Develop an understanding of area and determine the area of two-dimensional shapes.
Date Adopted or Revised: 09/07
Content Complexity Rating: Level 2: Basic Application of Skills & Concepts - More Information
Date of Last Rating: 06/07
Status: State Board Approved - Archived
Assessed: Yes
Test Item Specifications
  • Item Type(s): This benchmark may be assessed using: MC item(s)
    • At Grade 4, this benchmark will be assessed using MC items.
  • Clarification :
    Students will identify situations that require the use of the area formula in real-world contexts.

    Students will identify the number of square units of a rectangle as the base times the height.
  • Content Limits :
    Items may include deriving or explaining the area of a rectangle in order to solve real-world problems.

    Items will not include the formula for the area of a rectangle.
  • Stimulus Attributes :
    Items may be set in either a real-world or a mathematical context.

    Items may be on a grid, but a grid is not required.

    Graphics should be used in all these items.
  • Response Attributes :
    Responses should include units.
Sample Test Items (1)
  • Test Item #: Sample Item 1
  • Question: Mr. Clark hired workers to construct an in-ground pool in his backyard. For which of the following situations might the workers have used the area formula when constructing the pool?
  • Difficulty: N/A
  • Type: MC: Multiple Choice

Related Access Points

Alternate version of this benchmark for students with significant cognitive disabilities.

Related Resources

Vetted resources educators can use to teach the concepts and skills in this benchmark.

Lesson Plan

Area Isn't Just for Squares:

This lesson helps students make the connections between area and multiplication using square tiles.

Type: Lesson Plan

Student Resources

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Parent Resources

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