You're definitely onto something, though I suggest that the most important lessons for a kid to learn about investing/speculating are the ones that get meted out by losses. If you're fourteen, losing 1 BTC - $600 - is big enough to hurt and to rub in some trading lessons that have to be learned the hard way anyway.
It's much better to learn those lessons at fourteen by losing $600 than it is to learn then when you're forty through losing $60,000.
Absolutely! Failure is an important part of the learning process and it's definitely best to get it out of the way as early as possible.