My very favorite book for exploring and sharing nature with kids is This Book Was a Tree: Ideas, Adventures, and Inspiration for Rediscovering the Natural World by Marcie Chambers Cuff. Its both a hands-on book of crafts and activities and a book of principles and ideas for reconnecting with the natural world.
Brown Bear, Brown Bear, What Do You See? I see a book plagued by lack of conviction, critical thinking, and true intellectual curiosity. It's doomed from page two.
These super handy apps can make anyone an adventurer. They also make a decent case for swapping Angry Birds for the real thing. Like geese. (Although, geese are always angry.)
Our list of graphic books that are awesome on their own merits, but also happen to serve as a gateway to classic works of literature, mythology and history.