This is a fairly detailed book and would be better suited for children a bit older than my daughter. However, we've used it as a reference occasionally while we've been doing our unit study on rain forests, particularly to discuss a couple of specific things like the parts of a tree. It's a pretty decent reference book, all in all, and it has a good index and list of resources. Each topic is covered in one page, occasionally two, so it's easy to break up the information into smaller portions. ( )