A mathematical magician helps readers conceptualize a million, a billion, and a trillion. Really Big Numbers - LeVar explores ways of counting large numbers as he talks to people who share grouping and estimating techniques. How Crayons Are Made - In a visit to the Crayola Crayon Factory, workers show how crayons are made and talk abut the large number of crayons they handle in their jobs. Football Estimation - A visit to Giants Stadium shows how vendors and stadium employees use estimation to prepare for game day.