Math: Geometry: Symmetry

These sites offer many examples of how symmetry works in a variety of shapes. Find out the difference between reflection and rotational symmetry. Includes interactive sites that let you draw symmetrical shapes and manipulate them. There is a link to an eThemes Resource on tessellations.

教育标准

• 3,
• 4,
• 5,
• 6

申请州标准

• BBC: Reflection Symmetry

  Learn about symmetry and see what happens to a shape when it is folded in half. NOTE: The "Talk" link leads to message boards.

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• BBC: Rotation Symmetry

  Decide what shapes have rotation symmetry and locate the rotation point. NOTE: The "Talk" link leads to message boards.

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• Symmetry Animation

  Watch this animation to see how symmetric shapes forms. NOTE: The site leads to websites with ads.

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• Line Symmetry

  This interactive animation explains principles of line symmetry.

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• Learning Math: Line Symmetry

  Look at examples of symmetrical shapes and see some that aren't symmetrical. Includes shapes to practice drawing symmetrical lines through, plus the solutions.

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• Kali

  This interactive site lets you choose a color and a pattern and create a symmetrical design.

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• Bisecting Figures

  Here is fun activity for younger kids to practice finding bisection line.

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• UEN: Lines of Symmetry

  This lesson plan for fourth-graders offers an idea for introducing the concept of symmetry to students. The lesson involves having students work in groups to draw symmetrical shapes.

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• PBS: Using Symmetry to Create Corporate Logos

  This lesson plan is designed for six-eight graders and explains how four types of symmetry are used in logo design.

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• World Symmetry

  This school site shows how a class investigated the symmetry of many objects, including the alphabet, ink blots, the human body, and more.

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• Symmetry of Rugs

  Explore links on this page and learn symmetry and asymmetry, and patterns.

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• Two Faces

  View art pieces that use symmetry to display two faces on one image.

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• Folding and Cutting a Snowflake

  Here is how to cut a symmetrical snowflake from paper.

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• eThemes Resource: Math: Tessellations

  These sites explain how to create tessellations with polygons using rotation and reflection. Also includes information about artist M.C. Escher and examples of his tessellation artwork. There are several interactive games for manipulating patterns online.

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创建日期: 2000年10月02日 11:08 | 更新日期: 2012年8月16日 15:46