The National Geographic STEM series provides kids high-quality educational toys that are a whole lot of fun! This Glow in the Dark Science Kit contains four awesome science activities that will illuminate your imagination. Use this science kit as part of quality family time, or in home school curriculum. Product details : This kit includes both purple and green glow-in-the-dark slime kits, allowing you to make your own slime right at home. There is also incredible glow-in-the-dark putty, along with a UV light keychain that makes it possible to draw glowing images or words in the putty itself. You get everything you need to grow your own glow-in the-dark crystal, along with a fluorescent wernerite specimen that glows when you shine your UV light on it. Instructions for each activity are included in the kit, as well as a complete learning guide that teaches all about crystals, slime, putty, and fluorescence.