Sharon Duke Estroff is the founder and creator of Challenge Island, a STEAM program created for children’s education and enrichment to teach twenty-first-century skills through project-based learning. Sharon is also an author and an award-winning elementary school teacher, parenting and education expert, speaker, and freelance writer with work published in numerous publications, including Scholastic, Parent and Child, Woman’s Day, and Good Housekeeping. She continues her passion in children’s education by running the Challenge Island program from her home in Atlanta, Georgia. Joel Ross is an award-winning author of both children’s and adult books. He has received the Cybils Award among other honors, and was also named to the Texas Bluebonnet Award Master List. Joel lives in Santa Barbara, California. Mónica de Rivas is a children’s book illustrator who has published her work internationally, from Europe to North America to Asia. Ever since she was a young girl, she loved drawing, reading, and writing stories. She studied illustration at the School of Art and Design San Telmo, Malaga, and specializes in digital illustration. Mónica currently lives in Spain.