When Ralphie comes down with a bad cold, he is unable to host the Frizzle News Network television show on health, but Ms. Frizzle and the Magic School Bus save the day when they take a ride through Ralphie's germ-infested body.

שם הספר
The missing tooth
The magic school bus sees stars : a book about stars
Mixed-up magic
The magic school bus inside the human body
The magic school bus at the waterworks