Elizabeth Verdick has been writing books since 1997, the year her daughter was born. Her two children are the inspiration for nearly everything she writes. Before becoming an author, Elizabeth edited books for children and parents. These days she writes books for babies, toddlers, teens, and every age in between. She especially loves creating new board book series—including the Happy Healthy Baby® series, which is designed to capture the interest of your littlest readers. Elizabeth’s Toddler Tools® series helps young children and their parents cope with those tough times and transitions that happen every day (like naptime and bedtime). In the Best Behavior® series, she helps toddlers reach new milestones and improve their day-to-day behavior. Elizabeth also enjoys writing books for the Laugh & Learn® series, such as How to Take the GRRRR Out of Anger, and the Survival Guides for Kids series, such as The Survival Guide for Kids with Autism Spectrum Disorders. Both series help kids ages 8–13 get a handle on the social and emotional skills they’re developing throughout the elementary and middle school years. Elizabeth lives with her family and five pets near St. Paul, Minnesota.

Marieka Heinlen received her B.F.A. 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 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.