Synopsys
Synopsys: Optics for Kids: What Is Light?
This site provides a short explanation of light, how it travels, and the speed in which it travels. Many other concepts related to optics can be found on this site as well.
Harvard University
Web Science Resources: A Brief History of Optics
This timeline compiles an enormous amount of historical information from the field of optics. From 300 BCE to the present, strategic experiments, findings, and theories are described.
Science and Mathematics Initiative for Learning Enhancement (SMILE)
Smile: Light (Intermediate)
Lesson plan for various group activities about light. Provides demonstration and directions for the plans along with assessment.
Science Struck
Science Struck: Wavelength of Light
Describes the characteristics of light, presents two formulas for calculating its wavelength, and provides a table of the different wavelength ranges across the electromagnetic spectrum.
Science Fun for Everyone
Science Fun: Jello Lenses
Make glasses formed out of jello with this hands-on experiment. Links to video of the experiment.
Mocomi & Anibrain Digital Technologies
Mocomi: What Is Scattering of Light?
Do you know why the sky is blue? Article defines scattering and how it works. Explains the difference between the scattering of light and reflection or refraction.