Using affordable supplies, demonstrate how light is reflected or absorbed when passed through color filters. Materials Various colors of cellophane Various colors of beads, aquarium gravel, OR construction paper Red and/or green laser pointer (Optional) string (Optional) TV remote Management If you’re short on materials, projecting using a document camera can help students see the effect. For students with colorblindness, consider adding a legend to your colored beads using numbers (i.e., red =