Describe and determine area as the number of same-sized units that cover a region in the plane, recognizing that a unit square is the standard unit for measuring area.
Subject Area: X-Mathematics (former standards - 2008)
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
Date of Last Rating: 06/07
Status: State Board Approved - Archived
Remarks/ExamplesGeoboards, tiles, and grid paper provide helpful contexts for this exploration. The focus is on countable units rather than multiplying dimensions.
TEST ITEM SPECIFICATIONS
This benchmark may be assessed using:
At Grade 4, this benchmark will be assessed using MC items.
- Clarification :
Students will determine the area of a figure or a region on a plane by using countable units rather than multiplying dimensions.
- Content Limits :
Items may include estimating areas of irregular geometric shapes, such as a figure in the shape of a pond, a mitten, a foot, the sole of a shoe, or a solid letter D.
Items should include countable units that estimate to a whole unit or half unit.
Items may use only a one-to-one scale.
- Stimulus Attributes :
Shapes must be shown on a grid (or a gridlike graphic, such as geoboards or tiles); however, grid lines need not extend through the shape.
Items may be set in either a real-world or mathematical context.