Explore concepts of light, opacity, shapes, counting, sorting and environment with this array of transparent, translucent and reflective materials. The included guide is full of activities and concepts that are all research based and created from national education standards guidelines. This kit is a must have for any classroom. It includes transparent buttons, transparent stringing rings, reflecting sheets, transparent coloured rectangles, stained glass sheets, colour separation sheets, animal shapes, ecosystem transparencies, and a water cycle transparency.