The students are prompted to trace the path of refraction through a rectangular prism, a concave lens, and a convex lens. They then answer a few questions. Included is the observation labs (pencil, penny..) that precede the activity that I use as stations to introduce refraction. I use this lab to introduce lenses. You will need a laser and a prism set (rectangular prism, convex prism, concave prism). A single laser can be used if you don't have the 5 beam laser (just draw the beams one at a time).