I would ask whoever is requesting this what they goals are, then based on this get specific keeping in ming what the parents are comfortable with you teaching them. Locally here, it wasn't uncommon by the age of eight to have an axe in the woods and be responsible for camp fires for example. Odds are though that this isn't reasonable for most.
I would suggest starting off with really basic practices, the biggest survival problem for kids is just wandering off in the first place, then continuing to wander, and then ignoring the dangers of the elements. Kids often have a real problem of hiding from "strangers" which can prevent rescue and unfortunately there isn't a great solution to that.
At that age you want most things to be games as well, a treasure hunt can easily teach the basics of map reading and using a compass, plus you can get specific about plants (what to avoid and what to use) plus how to use them.