Where does bad light end up? In a prism! The presentation covers light, mirrors, lenses, and the structure of the eye. It also provides explanations of reflection, refraction, concave and convex mirrors and lenses, and a comparison of...

[Free Registration/Login Required] Change the focal point in this interactive concave lens to see how the focal length changes.After the activity, answer a challenge question to check for understanding.

This lab is designed to have students investigate the relationship between the radius of curvature and the location of the focal point for a mirror like situation.

This is a 10-question quiz about thin lenses.