Physics Classroom
The Physics Classroom: Refraction and the Ray Model of Light
Six complete lessons on refraction and the ray model of light. Tutorials include informational text, interactive activities, animations, and quick, interactive comprehension checks along the way.
University of Washington
Neuroscience for Kids: Do You Wear Glasses?
Have you ever wondered why you may or may not have to wear glasses? Use this explanation to find out the answer. It outlines the normal eye, the nearsighted eye and the farsighted eye. The diagrams are helpful for a more comprehensive...
Curated OER
Kids Health: Glasses and Contact Lenses
KidsHealth tells you how eyes work and how they can be corrected if you are having trouble.