Wolfram Research
Wolfram Math World: Symmetry
This site provides a detailed explaination of symmetry and many links to related topics.
National Council of Teachers of Mathematics
The Math Forum: The Four Basic Symmetries
This is a site from the Math Forum that gives visual examples to show the differences between the four different kinds of symmetry. Examples are given along with links to additional information.
Oswego City School District
Regents Exam Prep Center: General "Transformation" Vocabulary
This site offers a short discussion of transformations. The discussion has few pictures and expresses the transformations in terms of relative coordinates rather than pictures.
Optical Society
Optical Society of America: Optics for Kids: Guiding Light Optical Fiber
This experiment demonstrates the concept of total internal reflection, using basic materials. Accompanied by a detailed explanation of what's happening, and links to articles on reflection and refraction.
Optical Society
Optical Society of America: Optics for Kids: Mirrors & the Law of Reflection
A simple activity to investigate how light reflects off a flat surface, a convex one, and a concave one. With a link to an article on reflection.
Optical Society
Optical Society of America: Optics for Kids: Total Internal Reflection
An investigation into the total internal reflection of light, using a laser pointer. Accompanied by an explanation of what's happening, a discussion of Snell's Law, and links to additional information.
Optical Society
Optical Society of America: Optics for Kids: Mirrors and Images
An experiment to investigate how many images appear as the angle between two hinged mirrors is increased. Accompanied by an explanation of what is happening, questions for students to consider, and a link to an article about reflection.
Optical Society
Optical Society of America: Optics for Kids: Watch Tv Upside Down
An experiment to invert a television image using a magnifying lens. Accompanied by an explanation of what's happening.
Daily Teaching Tools
Daily Teaching Tools: Reader Response Quest. To Focus and Reflect on Literature
Daily Teaching Tools provides nineteen reading response prompts for fiction and six reading response prompts for nonfiction. W.11-12.9a Amer Lit 18th,19th, 20th cen/Analy
Bill Nye
Bill Nye: Mirror, Mirror
In this tutorial, Bill Nye uses a mirror to help the learner understand how our brain processes images.
ClassFlow
Class Flow: Soccer Path
[Free Registration/Login Required] In this flipchart, students apply their geometric sense by creating a design using tessellations.
Optical Society
Optical Society of America: Optics for Kids: Blue Sky Red Sunset
An experiment where light is shone through a bottle of water, and then milk added, to see how this affects the path the light takes (with links to articles on reflection and refraction that explain what is happening).
University of St. Andrews (UK)
University of St. Andrews: Augustin Fresnel
A short biographical sketch on the life and work of Augustin Fresnel (1788-1827). Comments on a few of his scientific accomplishments.
Science4Fun
Science4 Fun: How Rainbows Work
Learn how rainbows work by reading this illustrated explanation.
Optical Society
Optical Society of America: Optics for Kids: Make a Light Fountain
A simple experiment that demonstrates the concept of total internal reflection, and shows how light can travel around curves and corners, as it does in fiber-optic cables. Accompanied by an explanation of what's happening.
CK-12 Foundation
Ck 12: Geometry: Composition of Transformations Study Guide
This study guide on the composition of transformations covers some vocabulary terms and different types of these compositions. It is available for download with free registration.
Mocomi & Anibrain Digital Technologies
Mocomi: What Is Scattering of Light?
Do you know why the sky is blue? Article defines scattering and how it works. Explains the difference between the scattering of light and reflection or refraction.
Bill Nye
Bill Nye: Mirror, Mirror
Try this at-home science experiment that shows how your brain works with what you see.
Bill Nye
Bill Nye: Pond, James Pond
Try this at-home science experiment to learn how to see through the mirror made by a pond's surface.
University of Regina (Canada)
University of Regina: Math Central: Mathematics Glossary
This site contains the definitions for many geometric terms including transformations.
Wolfram Research
Wolfram Science World: Young, Thomas
This site from ScienceWorld provides a very short but factual biographical sketch of Thomas Young (1773-1829 CE) and describes his most notable scientific discoveries and contributions. Links are also provided throughout for additional...
Curated OER
Snaith Primary School: Settings: Mountain Reflection
A painting by Tony Newlin of a mountain with its reflection showing clearly in the calm lake at its base.