The Peace Book by Todd Parr is a geat book to use in yoga class. I think the book is a great description of peace and all of it's complexities- from getting along with others to finding peace with being who you are.
I asked each child to define peace, and then we read the book and acted it out in yoga poses. There are lots of pictures of animals that the kids can become. Partner poses are fun to do with this book because they promote teamwork and cooperation. It is also fun to have the kids draw peace.
We ended with chanting Om...