Smithsonian Mold-It! Perfect Cast Cast, Paint, Display and Learn Craft Kit Smithsonian Perfect Cast Molding Craft Kits combine creativity, discovery, and learning in one exciting artistic journey First, follow the instructions to make a mold of a simple item of your choice using the Alginate Molding Material Next mix the Perfect Cast Casting Material and pour it into the mold that you have created While it sets read all about what its like to be a paleontologist creating molds and plaster casts of fossils in the illustrated booklet Smithsonian products bring fun and learning together by utilizing vibrant imagery and unique and relevant subject matter in a hands-on toy that truly engages a child! PerfectCast CastingMix Perfect Mold Alginate Molding Material Reusable Molding Trays IllustratedEducational Booklet Complete Instructions