The firefighter is teaching children about fire safety rules. The rules include: never playing with fire or matches; stopping, dropping, and rolling if clothes catch fire; not hiding during a fire and waving arms to be seen; staying low by crawling to exits; getting out of a burning building and not going back in; having a family meeting place away from fires; and knowing how to call for help by dialing 999. Following these rules will help children stay safe in case of a fire emergency.