Before storytime, cut out and tape teeth in vertical line on wall in storytime space (make sure to put tooth labeled "1" at the bottom, etc). During storytime: "T. Rex had teeth that could be up to 9 inches long, and 6-inch teeth were common. After storytime, you can measure how many 6-inch T Rex. teeth tall you are! Stand against the wall right where the T. Rex teeth are taped in a vertical line. How many teeth tall are you? How many teeth tall is your grownup?" [Teeth graphics (pdf)]
