How to grow your own crystal geodes
This project is best for older kids, because it requires cooking and patience! Tara at the Feels Like Home blog gives a wonderfully detailed tutorial on how to create these beautiful “geodes” using egg shells, alum powder and glue. We especially like the clear crystals on the colorful plastic Easter eggs — what a great way to upcycle those eggs!
Science lesson: Some substances naturally form crystals such as salt, sugar, alum and snow. When one of these substances is dissolved in liquid, the molecules are attracted to one another in an ordered way, and they come together to form geometric crystals. More info here.