Set up your light source several feet (1 m) away. Make the room as dark as possible, then start by turning on only one of the colored bulbs.
Poke a small hole in the center of the foil with the pushpin. Orient your viewing device so the foil side is facing the light and the wax paper is facing you. Hold it up to the light, about 8–10 in (20 cm) from your eyes, and look at the wax paper as if it were a small television screen. What do you see?
Turn on a second light bulb, then look through the viewer again. Have your partner move and rotate the lights in different directions. Then ask your partner to block one light at a time and move his or her hand (or another object) in front of the lights, from right to left, left to right, top to bottom, etc. Is what you see on your screen upside down or reversed from left to right?
Hold your viewer up to another light source; for example, look outside through a window or door. Try other experiments and see what you observe.