A math game and counting book that takes advantage of the intuitive understanding of addition that children gain from a set of dominoes. Long's first book starts with a blank black domino perched next to an equation, 0 + 0 = 0; on the opposite page are dominoes laid out in a circle, or a zero. Each spread, with vibrant backgrounds to set off the black dominoes, follows that format; the surprise is in the symmetry of combinations that emerges--a glimpse of the wonder of numbers in a well-designed book.