Inspired by Jan Olsen's "Handwriting Without Tears" program, special education teacher, Barbara Lee invented crayon rocks as a natural and fun way to teach her students the pencil grip. Since a child's first writing tool is usually a crayon, she decided that that should be the one that encourages them to use their thumbs, first, and second fingers in a grip. The perfect tool for fine motor development, their shape does not encourage the holder to grasp with a closed fist. Crayon Rocks are made from USA grown and processed soy wax and a variety of non-toxic powdered pigments to give them their vibrant colors. These chunky, unique art tools are non-toxic, odorless, educational, and a whole lot of fun for kids of any age and skill level.