Michiko's mother writes books. Jessica's mother is a veterinarian. Pablo's father is a construction worker. What kinds of work do people you know do? On Career Day the children in Mrs. Madoff's class take turns introducing special visitors. Every visitor has something interesting to share, and together the class learns all about the different work people do. In the fourth Mrs. Madoff book, Anne and Lizzy Rockwell revisit Mrs. Madoff's class as they help young readers explore the question "What do you want to be when you grow up?"