Elizabeth Verdick has been writing books since 1997, the year her daughter was born. She is the author of more than 40 highly acclaimed books for children and teens in Free Spirit's Best Behavior, Toddler Tools(R), Happy Healthy Baby(R), and Laugh & Learn(R) series. Some of her most beloved titles include Germs Are Not for Sharing, Calm-Down Time, Stand Up to Bullying!, and The Survival Guide for Kids with Autism Spectrum Disorders (And Their Parents). She lives with her husband, two children, and a houseful of pets near St. Paul, Minnesota.

Marieka Heinlen received her BFA at the University of Wisconsin, Madison, and also studied at Central Saint Martins College of Art and Design in London. She launched her career as an award-winning children's book illustrator with Hands Are Not for Hitting and has illustrated all of the books in the Best Behavior and Toddler Tools series. Marieka focuses her work on books and other materials for children, teens, parents, and teachers. She lives in St. Paul, Minnesota, with her husband, son, and daughter.