Known simply as Ms. Math to children across the country, Dr. Rachel McAnallen has devoted her life to sharing the joy and beauty of mathematics with learners of all ages. A professional educator for more than sixty years, she travels the globe teaching math at every grade level. In addition to her experience in the classroom, Rachel has served as a department chair, a school board member, and a high school administrator. She claims that the latter position is responsible for the majority of her gray hairs. She has a passion for teaching, reading fictional mystery novels, and making mathematical modular origami, though not always in that order. A lifelong learner, Rachel received her Ph.D. from the Neag School at age seventy-five. She approaches the world around her with a boundless curiosity and a playful sense of humor that is reflected in her teaching style. She believes that mathematics is a language to be spoken, a music to be heard, an art to be seen, and a dance to be performed. Rachel loves to dance. She is a co-author of the Awesum Alex series of math books for children.