See Mindfulness and Coping Skills for more strategies to cope and have emotional control during upsetting situations.
From the author: "This is not designed to be a worksheet for a child to fill out on their own. Read the book with your child, and discuss the questions on each of the page. The goal of this book is to help your child UNDERSTAND their anger and learn some appropriate strategies to DEAL with it."
The source:
http://thehometeacher.org/2012/02/dont-be-an-angry-bird-free-printables.html
Don't Be an Angry Bird lesson book
Don't Be an Angry Bird poster