Digital Photography School has a great post on 13 Lessons to Teach Your Child About Digital Photography that apply to anyone interested in learning more about photography. My favorite lessons include…
- Hold a camera straight
- Get in close
- Balance between photographing things, people and places
- Rule of thirds
- Focal lock
- Different modes for different situations
Of course how old your child is and their interest in photography depends on how deeply you can get into these subjects.