"I spy a great big yellow two,/ a pair of scissors,/ and a button that"s blue." Preschoolers adore perusing A Drop of Water creator Walter Wick"s crisp, colorful photographs to find objects, and in I Spy Little Numbers, they"ll develop number identification and counting skills while they"re at it. On the number five spread, children will find not only the three main objects (an airplane with five windows, a soccer ball made up of pentagons, and a five-wheeled choo-choo train), but five-pointed sea stars, a nickel, a pea pod with five peas, and more. Other sturdy board books in the interactive I Spy Little Book series include I Spy Little Book, I Spy Little Wheels, and I Spy Little Animals. (Baby to preschool)