In a way, you can help them but I think you can help them see it on how your approached would be to them. They have to show interest on what you do so you can get their attention. My suggestion is you have to do something or show something in Bitcoin related that they would be interested in. For, example since they are young you can look for games that can gain BTC or Altcoins. In that way they would feel that it is not that easy to earn bitcoin and would have the feeling that they can't spend it easily because they felt how hard it was to earn.

Hope this give you an Idea. Keep me posted.