Absolutely children with that young age must enjoyed their childhood so when they get adult they can say or shared their children how wonderful childhood they had. Anyway if you see your children is interested in bitcoin you can teach them little by little but don't forced them so they won't feel pressure and the willingness should be there, soon when the right comes they will be the one who will learned it from their selves.
I would like to say that i have kids to and I love the idea of teaching them bitcoin, but maybe not as early as 10 years old. I will let them enjoy childhood as of this time with the physical activities like real sports.
Teaching ang engaging them to bitcoin and virtual life maybe soonest when they themeselves ask for it.