Arbordale Publishing (previously Sylvan Dell Publishing) has several books that bring educational concepts - particularly math - into the storyline as well as infusing the story with other facts and concepts. In What's the Difference children are introduced to the endangered animal dilemma; and along with this introduction of a scientific fact, subtraction is used as a way to enforce the sheer concept of loss the plight of these endangered animals presents.
Additionally (pun intended), the book is written in rhyme which again reinforces the learning process.
Each two-page spread consists of an endangered animal, numerical fact, and factoid box about the animal on those pages. As with other books in this series, there is a "For Creative Minds" section in the back that has more information, activities, and concepts. This is a good book for home, school, and public libraries.
DISCLOSURE: A complimentary copy was provided by Arbordale Publishing in exchange for a review. Opinions expressed are solely my own and I was not paid for this review.