Elizabeth Verdick is the author of more than 30 highly acclaimed books for children and teenagers, including books in the Toddler Tools board book series, the Best Behavior series for young children, and the Laugh & Learn(TM) series for preteens. Her most recent titles include Diapers Are Not Forever and Listening Time and Bye-Bye Time from the Toddler Tools series. Elizabeth lives with her husband, daughter, son, and five 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 the original edition of Hands Are Not for Hitting and has illustrated other books in the Best Behavior series and Free Spirit's Toddler Tools board book series. Marieka lives in St. Paul, Minnesota, with her husband and son.