Free Homeschool Geology Unit Study And Easy DIY Eggshell Geode. I have a free homeschool geology unit study. Also, grab more ideas on my best homeschool unit studies page. Find out how to create your own diy eggshell geode, gather a list of fabulous books, and learn some interesting facts alongside your child. Geology is the study of the Earth, on and under its surface, and the processes that shape it.
