Rays Teacher Resources

Several pages with an interesting discussion of the visible light spectrum and atomic absorption and emission line spectrum. Features excellent graphics, thorough and understandable discussion, and many interactive Java applets.

[Free Registration/Login Required] Students use the interactive features of Activstudio to identify and label one and two dimensional characteristics. Students explore rays, lines, end points, line segments, vertices, and angles.

Explains the terms and symbols used to discuss line angles, what an angle is, and the types of angles. Includes short video lesson demonstrating how to use a protractor to measure an angle. [0:57]

In this lesson, students learn that light travels in a straight line from a light source and that ray diagrams help us understand how an image will be created by a lens. In the accompanying activity, students explore the concepts behind...

A list of geometry definitions and a matching activity.

This lesson focuses on Euclidean Geometry terminology; such as line, point, line segment, congruence, circle, radius, ray, and more. It defines each term and provides an example of each.

A wonderful educational art site from KinderArt that includes creating a work of art in a style similar to that of Morrisseau. Includes a short biography, art vocabulary, and information on Ojibwa culture.

Scroll down to Lesson 2 for a tutorial on image formation in plane mirrors. The tutorial from Glenbrook South High School provides lessons on why and how an image is formed, image characteristics for plane mirrors, ray diagrams, plus more.

This video [11:31] focuses on computer screens and 2D graphics to begin a discussion of computer graphics. We ended the last episode with the proliferation of command line (or text) interfaces, which sometimes used screens, but typically...

A reference page that explores how an image is formed in a concave mirror. Page includes a ray diagram that shows the geometrical lines of sight.

This site explores linear perspective and how it was first used in the early 15th-Century. Discusses horizon line, vanishing point, and orthogonal lines. The site provides an example.

In this seven-problem quiz/practice students parameterize rays by solving for t.

Students are introduced to different ways of displaying visual spectra, including colored "barcode" spectra, like those produced by a diffraction grating, and line plots displaying intensity versus color, or wavelength. Students learn...

Neil deGrasse Tyson, director of the Hayden Planetarium, identified the phenomenon where the sun lines up for spectacular views in New York over a decade ago and coined it Manhattanhenge. Watch this cosmic event unfold right through the...

Learn what black holes are and the myths that surround them.

Provides examples and a video lesson that introduce fundamental statements of geometry.

The tutorial examines basic geometry vocabulary. Definitions and examples of a point, line, line segment, ray, and plane are included.

The lesson discusses commonly used geometric terms. Definitions and examples of a line segment, ray, and angle are included.

Did you know that light is a form of energy and always travels in a straight line? Discover some more interesting facts about light.

This interactive resource provides an example picture of the geometric figure chosen by students to review.

Explains terms and notation of basic elements of geometry. [12:57]

This site discusses primary lighting sources and gives information on the different properties and spectral characteristics of each. Also includes links to some interactive Java applets.

This site provides an introduction to the ideas behind the invention of television. The site includes a good selection of links to more information and a bibliography.

Twenty-four problems presented on a variety of Plane Geometry topics. They are given with each step to the solution cleverly revealed one at a time. You can work each step of the problem then click the "View Solution" button to check...