I bought this book at a Scholastic book fair my elementary school put on in the early 90s. The book remains one of my treasured favorites (16 years later). In fact, I found myself quoting it just the other day ("Without bones, you'd be floppy as a bean bag"). It's fun to read, extremely informative about what goes on inside your body, and it has information that sticks with you forever (I haven't read the book in over 10 years, but I still know that we have 206 bones thanks to it). I can't recommend it enough. I plan to buy it for my kids when I have some.