It’s got a good sturdy binding, and a solid amount of well-organized information packed into a book designed for early readers. Too often the effort to keep the text simple results in limited information. This book finds a good balance. The chapters make sense. The use of non-fiction text features, such as charts, glossary, table of contents, etc. is done well, rather than seeming like a forced add-on, as is also a frequent pitfall of early-reader non-fiction.