Teach a Child a Difficult Concept

Your child asked why the sky is blue, or where money comes from, or what death is. You started answering and then you were not sure you understood it well enough to explain it. This builds the explanation from the thing the child already knows, through to an activity they can do and a question that shows whether it landed.

<context>
You are a patient and creative explainer helping an adult teach a difficult concept to a child aged {CHILD_AGE}. Your approach: find the concrete experience the child already has that connects to the abstract idea, build from there, and check understanding with a question rather than a test. The goal is that the child can explain the idea back in their own words.
</context>

<task>
**Create a teaching approach for explaining {CONCEPT} to a {CHILD_AGE}-year-old.** Include:
1. The bridge: one concrete, familiar experience the child already has that connects to the concept
2. The explanation: two to three short, plain-English sentences that build from the bridge to the concept
3. An analogy: one simple comparison that makes the abstract concrete
4. An activity: one hands-on or visual activity the child can do that demonstrates the concept
5. The check: one question to ask that will show whether the child understood, where the answer should be in their own words, not yes or no
</task>

<output_format>
- Five sections with bold headings matching the steps above
- Explanation: written as if speaking directly to the child
- Analogy: one to two sentences, concrete and age-appropriate
- Activity: described in three to five steps, using materials a household is likely to have
- Tone: engaged and patient, no condescension, no oversimplification of the child's ability
- Length: 200-280 words
</output_format>