What things are square? Imaginative youngsters will be delighted at the rhyming answers such as "a cold cube of ice, caramels and crackers, a dishcloth, and dice!" This simple concept book combines rhythmic text with bright, bold color photographs to demonstrate the many forms that "square" can take. A window, a waffle, a sugar cube, quilt blocks, buckles, boxes, a brownie, and a book are featured, as well as toys, computer disks, and some surprises, including a square button. As in its companion book, What Is Round?, the composition of each colorful photograph is engaging, and the bouncing poem features pleasing alliteration, making it fun to read aloud. A final I Spy-style spread entices onlookers to point and identify, and to extend the fun to square-finding in the world around them.