Joe Holland offers some excellent thoughts.  Here’s a summary of his 8 points, but definitely read his explanation in full here.

1. Remember the outline.

2. Know the one, main point.

3. How is Jesus the hero?

4. Engage your kids with open-ended questions.

5. Make sure the gospel is clear.

6. Be the first to pray and confess.

7. Chase rabbit trails.

8. Remember the two rules: (a) they retain more than you think they do; (b) they understand more than you think they do.