A dad posted his 5-year-old's paintings online. He never imagined a response this big.

One of the toughest things about being a parent has to be helping your child discover and nurture their talents. You seek to encourage them to try new things without overwhelming them. You want them busy with lots of enriching activities but not so busy they don't have time to just be a kid. And when you do stumble on something they have a knack for, you tread lightly, wanting to give them every opportunity to pursue it without pushing too hard. It's a really tricky balance to get right. Maybe that's why we're so fascinated with child prodigies, or even just talented kids whose parents have...