Dean Vipond had to explain what graphic design is to a bunch of 4-year-olds:

I was surprised by two things: how readily most of the kids understood what design was for, and how they can express things through it; and also, for someone who specialises in explaining things to a target audience, how it took me doing a talk to children, to force me to confront my own profession, and explain its value in clear terms.

A week later, I was delighted to be sent a pile of work from a lesson the teacher had set, around the themes we touched on. Many of the kids really got it.

This brings to mind a quote from Picasso:

Every child is an artist. The problem is how to remain an artist once we grow up.