[starkred]

My usual answer is 'by example'.

I like to think I'm teaching my kid to think. Last night we started wondering why fish can swim near sharks and not get eaten. We talked, we speculated, we joked, we researched and discussed what we had found.

I wasn't trying to teach her to think. I had no ulterior motives at all, I was genuinely curious about shark feeding behavior. As I look back on it now I feel like I was teaching her to think by encouraging her to think, sincerely considering her ideas, showing her how to test them, and coming away with more knowledge than we started with.