Layout in children's books encompasses how text, illustrations, and white space interact on each page. It is crucial for pacing, visual storytelling, and overall reader engagement. A well-conceived layout guides young readers through the narrative and enhances their understanding and enjoyment of the story. Factors such as font size, image placement, and the alignment of text can significantly influence how appealing and accessible a book is to its target audience. Ultimately, a thoughtful layout contributes to the book's aesthetic and functionality.