Curated OER
Innovation: Light Speed
Get your scholars working at "light speed" with this worksheet on how different wave frequencies have been discovered and used. The assignment has 20 short-answer questions, set up in a table. Consider re-doing the table or allowing...
Exploratorium
Exploratorium: Critical Angle
Students can see light reflected and refracted in this demonstration. They will also discover the total internal reflection of light.
Boston University
Bu: Optics: Geometric Optics
Several short descriptions of demonstrations which illustrate principles of geometric optics (many of which focus upon refraction).
Other
Geometric Optics
This site provides a very brief definition to geometric optics, and includes links to related information.