Smithsonian Human Skeleton Casting Kit First, mix the PerfectCast mold mix in the ‘mix and pour’ bag and pour it into the molds. 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.
The Everything Kids’ Science Experiments Book You’ll discover answers to questions like, Is it possible to blow up a balloon without actually blowing into it? What is inside coins? Can a magnet ever be “turned off”?