"I Lost My Tooth!" is about a little girl who loses her first 8 baby teeth in various ways, even actually 'losing' a tooth and never finding it. Information about why and how children lose teeth is helpfully provided, including why a dentist may sometimes have to remove a baby tooth. Children around the ages of five and six are naturally curious about losing teeth as they see their classmates and siblings begin to lose teeth. They become very excited at the prospect of losing their own teeth and wonder when and how it will happen. A journal at the end of the story allows young readers to record how they lost their baby teeth.