Dads and kids will have fun discovering how crystals form and will realize that crystals already exist in their own homes in the form of salt and sugar.

Crystal-Growing Trees continue the theme of making science accessible and engaging for kids and dads. The package says it's for ages 10 and up. But even kids who are way too young to care about the science will have fun creating a tree and watching the crystals grow. And this crystal experiment is over in 24 hours, so dads can happily put it all away without leaving it out on the kitchen counter for weeks.