I found this while looking for a children's sermon on the feeding of the 5,000 from the John 6:

Learning Objectives: After this lesson, children will demonstrate knowledge of the key people and events in this passage … by retelling the story back to the teacher at the end of the session. Key points include:

1. Situation: Large crowd follows Jesus up the mountain.
2. Problem: No food for all the people.
3. Complication: Jesus tells his disciples to feed the crowd.
4. Complication: A young boy shares his lunch – but it’s not enough
5. Resolution: Jesus performs a miracle by multiplying a small boys gift.

Think about using this format for a sermon, not only on John 6, but for other problem/solution sermons.

Source: ministry-to-children.com/jesus-feeds-5000/