Standards Icon Benchmark #:MA.4.G.3.2

  • General Information
    • Benchmark Number: MA.4.G.3.2
      Benchmark Description: Justify the formula for the area of the rectangle "area = base x height".


      Subject Area: Mathematics
      Grade Level: 4
      Body of Knowledge: Geometry
      Big Idea: BIG IDEA 3 - Develop an understanding of area and determine the area of two-dimensional shapes.
      Date Adopted or Revised: 09/07
      Date of Last Rating: 06/07
      Cognitive Complexity: Moderate   -  What does this mean?
      Status: State Board Approved
      Assessed? Assessed
      Remarks/Examples: 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.

       

       

  • Test Item Specifications
    • Reporting Category: Geometry and Measurement
      Item Type(s):
      This benchmark will be assessed using: MC items.
      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 # Question Difficulty Type
      Sample Item 1: Mr. Clark hired workers to construct an in-ground pool in his backyard. For which of the following...   ...read more NA MC : Multiple Choice

  • RELATED COURSES (2)

  • RELATED Access Points (3)
    • Independent
      » MA.4.G.3.In.b: Find the length of the sides and the area of rectangular and square objects using square units.

      Remarks:
      Cover a rectangular area with carpet squares and count the number of carpet squares.
      Supported
      » MA.4.G.3.Su.b: Count the number of square units of a rectangle marked with a grid to determine its area.
      Participatory
      » MA.4.G.3.Pa.a: Identify the sides of a square or rectangle.


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