Children's literature can become a huge part of introducing lessons in the classroom. There are so many things you can do to use engaging children's books to introduce lessons, teach concepts, etc. This article does a great job giving ideas on things you can do! :)
http://www.wholechildeducation.org/blog/planning-engaging-lessons-using-childrens-literature
http://www.wholechildeducation.org/blog/planning-engaging-lessons-using-childrens-literature