CK-12 Foundation
Ck 12: Physical Science: Refraction of Light
[Free Registration/Login may be required to access all resource tools.] Discusses refraction of light in matter and how light changes its speed and angle of refraction according to the type of medium it is travelling through.
Center of Science and Industry
Cosi Columbus: Two Lenses in One
Investigate the behavior of a water filled vial, and discover why it acts like a magnifier. Includes full list of materials, procedures, and scientific explanation of what causes light rays to change direction.
Utah Education Network
Uen: Enlightening Explorations, Part Ii
This instructional activity engages students in learning about light. Studets will describe how light is produced, reflected, refracted, and separated.
Other
60 Second Science: Little Drops of Water Experiment
Explore the properties of water and observe how drops of water can act as a magnifying lens.