Symmetry

Online

Illuminations: Mirror Tool

http://illuminations.nctm.org/ActivityDetail.aspx?ID=24

Use this tool to investigate symmetry. You can rotate, flip, or reflect a figure across a line.

ExploreLearning: Reflections

http://www.explorelearning.com/index.cfm?method=cResource.dspView&ResourceID=194

Explore the concept of reflections in real-time. Use a single point, a segment, a triangle, or a quadrilateral, and watch the reflected changes that occur as you manipulate the green figures. Also includes side and angle measurement tools.

ExploreLearning: Snowflake Designers

6-Sided: http://www.explorelearning.com/index.cfm?method=cResource.dspView&ResourceID=47 6-Sided Advanced: http://www.explorelearning.com/index.cfm?method=cResource.dspView&ResourceID=45 8-Sided: http://www.explorelearning.com/index.cfm?method=cResource.dspView&ResourceID=46 Holiday Snowflake: http://www.explorelearning.com/index.cfm?method=cResource.dspView&ResourceID=401

These are various snowflake creators from the ExploreLearning website. Using your mouse, make small changes to the clipping of "paper" and see the impact it has on the whole snowflake.

NLVM: Transformations (Reflection)

http://nlvm.usu.edu/en/nav/topic_t_3.html

Investigate the concept of Reflection by creating custom shape patterns and dragging and turning the line of reflection. Add new objects to the work area to further explore reflection.

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