Learning Fun for Kids Online

Home school and after school, kids online can access some great sites and games that are both educational and fun. This site reviews and links to the best, and also discusses some parenting articles and homework sites of interest to parents.

Wednesday, November 18, 2009

Geometry Homework -- Reflection and Symmetry

A reflection isn't just what looks back at you in the mirror in the morning. Reflections are also mathematical problems to be drawn, groaned over, erased and drawn again.

Back to MathIsFun.com for geometry help, where they give two underlying principles of reflections:

1. Every point is the same distance from the central line;

2. The reflection is the same size as the original image.

There's also a definition to work with: a reflection is the image flipped over the mirror (or center) line.

If all that is clear as mud, go on and play around with the shapes on their interactive graph, then scroll down for explanations and tricks.

There's also a wonderful tutorial on Line Symmetry at LinksLearning.org that's sure to help clear up concepts behind lines of symmetry (a snowflake has 6!). After the explanations are given in each part, there's an activity to see if you understand what you've watched before you progress.


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posted by Stephanie @ Wednesday, November 18, 2009  


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