Rectangles can be fun and even exciting! Birthday packages arriving at the door, favorite books at the library, the community pool in the summer—all of these are familiar rectangular shapes in our everyday lives. Beginning readers and budding mathematicians need to know this useful shape as a foundation to geometric concepts. Through this inviting volume, they'll be able to identify the rectangle's shape in the objects in the carefully selected, colorful photographs. A concluding question asks readers to identify rectangles in a final image, providing a closing assessment opportunity.