Arya Ökten is a PhD student in immunobiology at Yale University, and Dr. O's original student. Arya likes to spend her free time reading books and enjoying good chocolate. Giray Ökten is a professor of mathematics at Florida State University. When he isn't at the blackboard, he likes to spend his time listening to classical music and watching film noir movies. Arya and Giray wrote this book over several years based on math workshops they co-taught to students from elementary and middle schools in Tallahassee.