These 2 inch x 8.5 inch bookmarks explain why we are naturally radioactive. The colorful front carries the message that we live in a radioactive world. The back is packed with radiation facts, such as how we contain Potassium 40 and Carbon 14. A special plastic is used to print the bookmarks, which makes them sturdy for long use. The bookmarks are great handouts for students, teachers, placing in libraries, distributing during exhibits, and more. (Appropriate for 5th grade levels through adults.)
*(A lenticular bookmark has a printed image that shows depth or motion as your viewing angle changes.)
