I don't know where you are located but we do youth classes a couple times a year (usually in the spring and summer) in Lexington Park, and we also do custom classes for families and groups.
You may want to explore finding NRA Home Firearm Safety course. Most of the NRA Instructors/Training Counselors here can give the course. It is not often one that is offered.
What age are the kids? Maybe you can get them into a junior shooting program. They will learn safety, gun handling, and marksmanship. There are BB gun programs, air rifle, small bore, etc. Programs are sponsored or put on by many groups such as American Legion, Jaycees, Scouts, 4H, CMP, NRA, Project Appleseed, etc.
Or put on your paternal hat, assume the traditional role. You teach them.
Since the invention of firearms, people were tought by their fathers. I'm sure thoudands of years before that , the safe and effective handly of pointy sticks and big rocks was customarily learned from one's father .