cts such as making a surface survey of a site, building a screen for sifting dirt and debris at a dig, tracking soil age by color, and counting tree rings to date a find, teaches kids the techniques that unearthed Neanderthal caves, Tutankhamun's tomb, the city of Pompeii, and Tenochtitlan, capital of the Aztec empire. Kids will delight in fashioning a stone-age tool, playing a seriation game with old photographs of cars, "reading" objects excavated in their own backyards, and using patent numbers to date modern artifacts as they gain an overview of human history and the science that brings it back to life.