How it’s done
Every child knows something his father or mother doesn't: a game, a drawing trick, a dance step, how something works that escapes you. This activity is simple and strange at once: formally asking him to teach it to you.
- Ask for the class in earnest. Not "show me for a sec," but "I want to learn this and I want you to teach me." The formality matters: you're giving him the role, not a gesture.
- Be a real student. Ask when you don't understand, make mistakes without acting (you're going to make real ones), ask him to repeat what you didn't get. No faking clumsiness — children smell condescension a mile off.
- Let him grade you. At the end, have him tell you how you did and what you still need to practice. Hearing him give you feedback with a teacher's seriousness is one of the great hidden pleasures of parenting.
The trick is to make it regular: every so often, a new class. Over the years, the catalog of what he can teach you only grows.
What it builds — the why
To teach something you have to understand it twice: order it, sequence it, find the words — your child learns more about his own thing by teaching it to you. But the deep part is the other one: discovering that the relationship doesn't flow in only one direction, that he too has something to give you and that you're able to put yourself in his hands. That reciprocity, planted early, is the seed of the adult relationship they'll have later. And along the way you learn something real — that can't be faked.
How it changes with age
6–9 Childhood
10–12 Preteens
13–15 Early adolescence
16–18 Adolescence
Variations
If what he masters is digital — a game, a tool — the class works just as well through a screen: shared screen and you with the controller in hand, as the student. Grandparents version: few scenes are worth more than a girl teaching her grandfather something with infinite patience — and the reverse closes the circle.
What to watch for in your child
The classic failure is the impatient student who corrects the teacher: if you end up teaching him how to teach, the activity died. Bite your tongue. Don't turn the class into a covert evaluation of what he knows, and don't use it to get into his world with an agenda ("this way he'll tell me about his friends"). It's a class. Learn it.