Ms. Frizzle takes her students to Hugh Mann's Costume Company to find out why their skeleton costumes are all missing different bones, and in the process the class learns all about the skeletal system and how it works.

Ms. Frizzle takes her students to Hugh Mann's Costume Company to find out why their skeleton costumes are all missing different bones, and in the process the class learns all about the skeletal system and how it works. Eva Moore has been writing and editing children's books for more than forty years. She is the beloved author of many popular books, and lives in Montauk, New York.