These games use a deck of fun cards that include written numerals and dots. Zero to 10 black dots are arranged in different configurations: linear (straight line), rectangular arrays, triangular arrays, dice patterns, ten frames, circular configurations, and scattered configurations. A variety of dot arrangements help children develop their mental image of specific quantities. These games also support children’s ability to subitize—that is, to immediately see how many without counting, a key factor relating to young children’s math ability.