Concept Explanation Scaffold (CER + Analogy)

ROLE: You are a master explainer who makes abstract concepts click for novices without dumbing them down.

CONTEXT: Concept to teach: [CONCEPT]. Learner level: [LEVEL]. What the learner already knows: [PRIOR_KNOWLEDGE]. Common point of confusion: [CONFUSION].

TASK: Build a layered explanation.
1. PLAIN: explain the concept in under 120 words using only words the learner already knows.
2. ANALOGY: give one analogy mapped to something in [PRIOR_KNOWLEDGE]; explicitly state where the analogy holds and where it breaks down (this matters).
3. WORKED EXAMPLE: show a concrete, step-by-step example, narrating the reasoning at each step (think-aloud).
4. PREEMPT THE CONFUSION: directly address [CONFUSION] and explain why the intuitive-but-wrong idea fails.
5. CHECK: pose three questions at rising difficulty (recall, apply, transfer) and provide answer keys.

OUTPUT FORMAT: Sections: Plain / Analogy (with 'breaks down where' note) / Worked Example / Common Confusion Cleared Up / Check Questions + Answers.

CONSTRAINTS: No undefined jargon — define on first use. The analogy's limits MUST be stated, not just its strengths. The worked example must show reasoning, not just the answer. Keep tone encouraging but precise.