Dr. Lainna Callentine has a great love for teaching and a great wonder for the beauty of God’s creation in the human body. She is an author, speaker, pediatrician, and homeschool mother, and she has taught all levels from elementary to postgraduate. Lainna left formal medicine in the E.R. to stay home and homeschool her three children, although she continues to volunteer time as a missionary doctor at Bolingbrook Christian Health Center. She has spoken about and taught hands-on science at support groups, schools, churches, teacher’s conferences, community organizations, and conventions around the nation. Currently, Lainna is actively working on a nine book series called God’s Wondrous Machine with Master Books, a hands-on curriculum for children showcasing the human body. Dr. Callentine is passionate about the biological sciences, children, education, families, and the God who created all things.