Cheri J. Meiners 
Talk and Work It Out [PDF ebook] 

What’s the best way to solve problems between people? By talking them over and working them out. It’s never too soon for children to learn the process of peaceful conflict resolution. This book distills it into clear, simple language and supporting illustrations. Children learn to calm themselves, state the problem, listen, think of solutions, try one, evaluate results, and even agree to disagree when a solution isn’t possible. Includes skill-building games and role plays for adults to use with children.