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...

Defines symmetry, line of symmetry, point symmetry, and gives examples.

In this video segment [3:25] from Cyberchase, a plant expert shows Bianca the patterns and symmetry found in nature.

This activity has instructions for making symmetrical portraits of the human face using a digital photograph. It's an activity students of all ages would enjoy.

The most basic quadratic is y = x2. The general technique for graphing quadratics is the same as for graphing linear equations. The quadratics graph as curvy lines (called "parabolas"), rather than the straight lines generated by linear...

Teachers can download this teaching package that looks at light and symmetry through the use of mirrors. Learners will enjoy the nine mirror challenges, along with the hands-on activities described in the lessons. Teachers will...

This site provides a hands-on lesson plan to make a quilt using symmetry.