Interactive Science Library : Science comes alive with Britannica and the amazing SD-X Reader. Touch pages with the SD-X REader to hear thousands of fun facts. Learn how volcanoes erupt. Land on Titan with a space probe. Find out what's in your cranium. Explore our universe with Encyclopedia Britannica - a world leader in teaching science to kids. Colorful illustrations and audio engage young learners. Older students explore at their own pace. Correlates to grades 5 to 8 science curriculum. NOTE: This is a Scratch and Dent book and may have noticeable dents, scratches and various other cosmetic issues as well as torn or missing dust jacket. These items are only guaranteed to be structurally complete and readable and therefore are sold as is.