University of Minnesota
University of Minnesota: How Does Light Travel?
Contains a four step procedure to deriving the law of reflection using algebra, Fermat's principle, and calculus (simple derivatives). This is good for an in-class theoretical exercise.
Science Education Resource Center at Carleton College
Serc: Investigating Light Properties
Students will investigate how light travels and what it does when it hits an object. Light sources will be used to represent a beam of light. Students will direct the beam toward various objects and materials. Through observations...