Book excerpt: A young girl sees the world differently in this beautiful picture book celebration of math. Everyone has a passion. For some, it's music. For others, it's art. For our heroine, it's math. When she looks around the world, she sees math in all the beautiful things: the concentric circles a stone makes in a lake, the curve of a slide, the geometric shapes in the playground. Others don't understand her passion, but she doesn't mind. There are infinite ways to see the world. And through math is one of them. This book is a gorgeous ode to something vital but rarely celebrated. In the eyes of this little girl, math takes its place alongside painting, drawing and song as a way to ponder the beauty of the world.