MA.3.G.3.3Archived Standard

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Build, draw, and analyze two-dimensional shapes from several orientations in order to examine and apply congruence and symmetry.

Remarks

Example: Draw a line of symmetry for each of the following:


Symmetry mainly includes reflectional symmetry at grade 3. Students should explore that reflectional symmetry produces congruent shapes.
General Information
Subject Area: X-Mathematics (former standards - 2008)
Grade: 3
Body of Knowledge: Geometry
Idea: Level 2: Basic Application of Skills & Concepts
Big Idea: BIG IDEA 3 - Describe and analyze properties 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 3, this benchmark will be assessed using MC items.
  • Clarification :
    Students will identify lines of symmetry and/or reflections. 

    Students will identify congruent polygons. 

    Students will identify two-dimensional shapes composed of congruent polygons.

  • Content Limits :
    Items may include concave and convex polygons with 3, 4, 5, 6, 8, or 10 sides.

    Items should use the correct geometric term with common terminology set in parentheses, i.e., reflection (flip).

    Items may assess the following terms: symmetry, reflection, and/or congruent.

    Transformations may be used in graphics; however, the transformations needed to compose or decompose polygons (rotations, translations, dilations) will not be assessed.
  • Stimulus Attributes :
    Items may be set in either a real-world or mathematical context.

    Graphics should be used in all of these items.
Sample Test Items (1)
  • Test Item #: Sample Item 1
  • Question: Sam cut a rectangular piece of paper into 2 congruent pieces. Which could be the two pieces of paper?

     

  • Difficulty: N/A
  • Type: MC: Multiple Choice

Related Access Points

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

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Lesson Plan

Symmetrical Solutions:

Students will use paper cutout and geoboards to find and create lines of symmetry. Students will have the opportunity to work with a partner and independently.

Type: Lesson Plan

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