Lessons from a friend who is a parent:

ask a child "why", and "how do you know"

eg:

Child: "Koalas live in Australia"

Parent : "How do you know?"

Child: "Because everyone knows! They also live in zoos here."

Parent: "Unfortunately."

Asking math questions using fact families

(if wrong)

Parent: What did I say about guessing?

Child: No guessing.

(last two from Niguel)