This nonfiction, instructional book is the level 4, Captain Paper Airplane book in this paper airplane series. The book starts out discussing the captain rank of achieving level 4 in paper n folding. I really like that on the first page, there is a red box that tells the reader that this is a difficult level and that if their planes don’t look perfect that is alright and it is going to take practice. The book then lays out the materials needed to construct the airplanes discussed in the book, and the techniques and terms used throughout the book. I like this part of the book because it teaches through words, photos and drawings the folds, including the folding symbols used in the book. The book then teaches the reader how to make a fighter jet, warthog, gliding grace, flying accordion, space bomber, sparrowhawk and screech owl. At the end of the book, the author teaches the reader how to play a game of testing landing skills called Aircraft Carrier with a friend. There is also a read more and internet sites section. All in all, as far a making airplanes this is a nice book. These are pretty tough airplanes, but I am sure there are boys out there that can make them!