Ultimate Volcano Science Kit &ndash; Craft a Volcano and Make It Erupt BUILD AN ERUPTING VOLCANO  Kids will love this hands-on science activity! Cast and paint your volcano, then make it erupt! COLLECT 3 VOLCANIC ROCKS  Includes unique volcanic specimens: Pumice (a volcanic rock that floats) and a geode (formed by volcanoes) COMPLETE SCIENCE FAIR PROJECT  This hands-on volcano set is the perfect science fair exhibit or birthday gift for children 8 to 15 A HOMESCHOOL FAVORITE  Learn the science of volcanos and rocks. Our full-color adventure guide has educational material written by teachers 100% SATISFACTION GUARANTEE - Join the millions of parents who have chosen our award-winning science toys and experience the Discover with Dr. Cool difference!