I totally agree with the comments of Fox, adding that as a parent technobo, YOU are going to be the best teacher your kids will ever have.
In growing up in a country where the outdoor activites of many was a way of life, education was the key especially in regards to weapons/firearms and their use regardless whether they were just an air rifle or a full on semi auto military weapon. That was passed along thru the generations that follow.
Education is the key, talking to them on a level that they understand, hopefully taking away that "curosity factor" they may have to go looking on their own will provide them with the knowledge they need to make informed decisions in the future.
In regard to airsoft, at what age do you start to educate them??...good question, that is what makes a good parent, knowing when to start.