It would be better if you would also teach them how to trade so they would know how to get more than just what you give.
You know what they say give a man a fish and you feed him for a day,teach a man how to fish and you feed him for a lifetime.
It is great that you would give them BTC but you should also teach them about crypto stuff so they would know how to use it,
And besides there are so many scammers and hackers out there so you should also teach them how to avoid it and how to keep their crypto safe.