More Fun with Nature is a compilation of five other Take Along Guides. It Berries, Nuts and Seeds; Birds, Nests and Eggs; Rocks, Fossils and Arrowheads; Seashells, Crabs and Sea Stars; and Wildflowers, Blooms and Blossoms.
We have so many nature study guides and field guides and how-to books on exploring the outdoors, but we always go to this one again both for figuring out what things in our locale might be called and for references for drawings. I finally showed my littlest son how to use the book independently (he's only just become an independent reader) and he's had it outside with him all day, shouting questions and comments to me that are clearly inspired by this text.
Worth it to just buy the hardbacks instead of the individual guides as this is an excellent resource for little nature enthusiasts and will be frequently thrown into backpacks.