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Activity
Houghton Mifflin Harcourt

Houghton Mifflin Harcourt: Saxon Activity Center Real World Investigation: Symmetry Around Us [Pdf]

For Students 3rd - 8th
Use this internet lesson to explore different types of symmetry in nature. Learners examine line symmetry, rotational symmetry, and bilateral symmetry. An integrated math, language art, and art lesson. Acrobat Reader required.
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Activity
University of Cambridge

University of Cambridge: Nrich: Symmetry Challenge

For Students Pre-K - 1st Standards
Sharpen your logic, symmetry, and pattern recognition skills while working on this challenge. Solution included.
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Activity
University of Cambridge

University of Cambridge: Nrich: Happy Halving

For Students 1st - 2nd
On this one page website expand your logic, symmetry and pattern recognition knowledge while working on this challenge. The solution is available to double check your solution.
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Handout
University of Georgia

University of Georgia: Inter Math: Line of Symmetry

For Students 9th - 10th
This site gives a description of a line of symmetry along with an with a visual representation. There are links to related terms, everyday examples, challenging problems, more information, and the interactive check point involving lines...
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Article
Mocomi & Anibrain Digital Technologies

Mocomi: What Is Symmetry in Math

For Students 2nd - 8th
Defines symmetry, line of symmetry, point symmetry, and gives examples.