Symmetry

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Introduce the concept of symmetry with our Symmetry Lesson Plan.  This interactive lesson enables students to define symmetry, recognize a line of symmetry for a two-dimensional figure, identify line-symmetric figures and draw lines of symmetry. Engage critical thinking and generalize understanding as students explore the ways the human body is symmetrical and the reasons why it does not have perfect symmetry.

Symmetry Lesson Plan Includes:

  • Full Teacher Guidelines with Creative Teaching Ideas
  • Instructional Content Pages about Symmetry.
  • Symmetry Cutting and Folding Activity
  • Symmetry Practice Worksheet
  • Symmetry Drawing Homework Worksheet
  • Answer Keys
  • Common Core State Standards
  • Many Additional Links and Resources
  • Built for Grades 4-6 but can be adapted for other grade levels.

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Description

Introduce the concept of symmetry with our Symmetry Lesson Plan.  This interactive lesson enables students to define symmetry, recognize a line of symmetry for a two-dimensional figure, identify line-symmetric figures and draw lines of symmetry. Engage critical thinking and generalize understanding as students explore the ways the human body is symmetrical and the reasons why it does not have perfect symmetry.

Sample Classroom Procedure / Teacher Resources Snippet:

  1. Ask students what they see when they look into a mirror.
  2. Allow for responses and discussion.
  3. Ask students if a body was cut down the middle (vertically), would the right half be the same as the left half. Why or why not?
  4. Allow for responses and discussion.
  5. Introduce Symmetry to the students. Tell students the human body is mostly symmetric, though not exact.
  6. Distribute Symmetry content pages. Read and review with the students. Make clear the pronunciation of symmetry, symmetric, and symmetrical and their meanings. Use additional resources to enhance understanding.
  7. Ask students now: Why is the body not perfectly symmetric?
  8. Allow for responses and discussion.
  9. Distribute the Activity pages. Review the instructions. Distribute the scissors.
  10. Be sure students understand that some of the shapes may be folded more than one time to determine a line of symmetry. (You may choose to make extra copies of the pages as some of the shapes may become overly folded by the students.)

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Common Core State Standards:  CCSS.Math.Content.4.G.A.3

Class Sessions (45 minutes): 1 – 2 class sessions

Additional Resources:

Want more math resources? Check out our other Math Lesson Plans!

Additional information

Grade Level

4th Grade, 5th Grade, 6th Grade

Subject

Math