An experiment using Jell-O to create lenses, to see how light behaves with flat, concave, and convex lens surfaces. With an explanation of what is observed, and a link to an informative article on lenses.

[Free Registration/Login may be required to access all resource tools.] What a lens is and what it does, concave and convex lenses.

This site provides a basic experiment that shows how a lens works. This lesson plan explains nearsightedness and farsightedness. It also explains concave and convex lenses.

This lesson will describe what a lens is and how a lens works.

Understand how lens curvature, focal length and f-stop are related.

An illustrated tutorial which takes students step-by-step through the process of drawing ray diagrams.

This site from Georgia State University discusses the means by which mirrors and lenses are combined to produce an optical instrument which accomplishes a specific purpose. Good illustrations.

Illustrated diagrams in this tutorial help students understand the properties and functions of lenses.

[Free Registration/Login Required] Learn about the type, size, location, and orientation of the image that forms when a thin lens is used to view an object using this interactive simulation. A PDF worksheet and a video tutorial are also...

Site describes how to construct a telescope and what you can do with it. Also provides a simple explanation of how telescopes work.

This is an informative site from Georgia State University. It gives a discussion of the thin lens equation and an illustration of its use in determining the image distance based upon the object distance and the focal length.

[Free Registration/Login Required] This flipchart introduces fifth graders to the science of light. Principles such as transparent, translucent, opaque, reflection, and refraction are covered. Concave and convex mirrors and lenses are...