A little science, a little art and a lot of fun! This complete science craft kit comes with everything you need for the perfect steam activity. Learn how to grow crystals, then arrange them into your own crystal constellation - a Heart or Star - or create something completely unique to you! Use the included modeling clay (6 colors) to marbleize your own interstellar landscape. Add clay and crystals to your battery-operated tap light (requires 4 AA batteries, not included). when finished, display your constellation on a wall or table and see the light shine through your custom crystal creation! Ages 7+