Double the fun with two Barbie: You Can Be Step into Reading leveled readers in one - featuring two popular sports careers: gymnast and ballerina! This deluxe Step into Reading book features two leveled careers readers in one!  Children ages 4 to 6 can read about two popular sports careers! First, Barbie learns to be a gymnast in the Step 2 You Can Be A Gymnast. Then flip the book over and Barbie trains to become a ballerina in the Step 2 You Can Be A Ballerina.