Introduces the concept of odd and even numbers as Ruby and her school friends find seats on the amusement park rides.

Lisa Harkrader is the author of a number of children's and young adult books, including the award-winning Airball: My Life in Briefs and The Adventures of Beanboy, as well as several titles for Kane Press. Following her dream, MH Pilz has been a professional illustrator for over 25 years. She studied Art Education, with further training from the Art Institute of Chicago and the Chicago Academy of Art.