Light and Transparent Translucent Opaque Materials: All about light with Transparent, Translucent and Opaque Sorting Activities, Worksheets and Posters. This download has worksheets✍, posters☀️, and activities ✋ for sorting pictures of different objects into the 3 groups: Transparent, Translucent and Opaque. Definition posters are also included for light terms such as reflection, refraction, lens, concave, convex, and prism. The sorting mats are to be used by sticking the object pictures unto th