Counting on Katherine

I picked this book in part because many kids, including my own daughter, are fascinated by space and will be intrigued by Katherine Johnson calculating the course of moon landings. I also picked it because I very deliberately included a mathematician in Who Is a Scientist?, and I think mathematicians are often neglected in round-ups of books about scientists. My third reason is that this book does a great job of explaining the math that “human computers” like Katherine did, and why this math was important for NASA to send rockets into space.