8 years & up. How to Take the Grrrr Out of Anger by Elizabeth Verdick and Marjorie Lisovskis. Kids need help learning how to deal with anger. This book speaks directly to them with strategies they can start using immediately. Blending solid information and sound advice with humor and lively illustrations, it guides kids to understand that anger is normal and they can learn to express it in healthy ways. This revised edition addresses children’s exposure to increased societal violence and includes discussion and examples of anger related to texting and social media.