playz edible candy! food science stem chemistry kit - 40+ diy make your own chocolates and candy experiments for boy, girls, teenagers, & kids ages 8, 9, 10, 11, 12, 13+ years old playz test colorful, yummy formulas you can eat! stem kits are designed by educators to be ‘smart-fun’ activities for children 8 and up under adult supervision that provide a natural way to work & learn together through purposeful science-based play.