My First Body Book
This is a fun and very kid-friendly introduction to the body and its various functions and capabilities. It begins with a set of transparent overlays which portray the skeleton (skeletal system), the heart, lungs and blood (cardiovascular system), and the brain and nerves and digestive system. When I first got this book (back in the days when I was a DK representative for a short time) I worried that this book wouldn't hold up very well. After more than three years of use by little hands, I have to admit it's done quite well.