Bundle: 4 Items- Science for Kids Thinking Cap Activities Grow Your Own Gel Balls, Crystals, Snow, and Crystal Tree Kits Have fun with science!; Comes with Free How to Live Stress Free Ebook Bundle: 4 Items- Science for Kids Thinking Cap Activities Grow Your Own Gel Balls, Crystals, Snow, and Crystal Tree Kits No need to worry if your little scientist is a first time experimenter, all kits come with easy to follow instructions Please use under adult supervision Not recommended for children under 12