A flag book is a type of artist's book that features a series of pages or flags that can be flipped or fanned out. Each page is typically attached at one edge, allowing the flags to stand up when opened. This unique structure creates a dynamic visual experience, as the flags can display images, text, or patterns on both sides. Flag books are often used in book arts and can be made from various materials, including paper and fabric. They are popular among artists and educators for their interactive qualities and versatility in storytelling and presentation, making them a creative tool for expressing ideas.