④实战分享：用AI批量生成分层教学插图，覆盖3个能力层级

【应用场景】 差异化教学要求为不同能力层级学生提供适配的视觉辅助材料。高水平学生需抽象概念图，中等水平需步骤分解图，基础水平需具象情境图。手动制作三套插图耗时且难以保持主题一致性。AI可基于统一主题生成分层视觉素材。 【案例描述】 某国际学校IB课程教师需为"生态系统能量流动"主题生成三套插图： - 进阶层（HL）：抽象能量金字塔与数学模型 - 标准层（SL）：食物链步骤分解图 - 基础层（Support）：热带雨林动物实拍风格场景 要求三套图保持色彩体系与核心符号一致，便于课堂对比讲解。 【提示词正文】 Tiered Illustration Generation Protocol Base Theme: {core_topic} Visual Consistency Anchors: {color_palette}, {core_symbol}, {composition_style} Tier 1 (Advanced/Abstract): Generate a conceptual diagram of {core_topic} emphasizing {abstract_principle}. Use {visual_metaphor_1} as central element. Include {mathematical_or_theoretical_elements}. Style: Minimalist infographic, vector aesthetic, {color_1} dominant. No living organisms depicted. Tier 2 (Standard/Procedural): Generate a step-by-step breakdown of {core_topic} showing {number_of_steps} sequential stages. Each stage labeled with {label_format}. Use {visual_metaphor_2} connecting elements. Style: Clean technical illustration, isometric view, {color_2} dominant. Include directional arrows. Tier 3 (Foundational/Concrete): Generate a realistic scene depicting {core_topic} in {real_world_context}. Feature {specific_organisms_or_objects} interacting naturally. Style: Photorealistic with educational annotation zones, {color_3} dominant. Ensure biodiversity accuracy for {geographic_region}. Cross-Tier Requirements: - All images: 16:9 aspect ratio, 300 DPI - Shared elements: {common_visual_element} appears in all three - Negative space: 15% reserved for teacher annotation overlay - Accessibility: High contrast mode compatible, no red-green reliance Quality Assurance Checklist: □ Tier 1: Abstract enough to challenge advanced learners □ Tier 2: Clear sequence logic, no skipped steps □ Tier 3: Realistic proportions, species accuracy verified □ All tiers: Color-blind friendly palette, consistent brand feel 【使用技巧】 • {visual_metaphor_1/2} 建议采用同一原型变体（如 "tree" → "data tree" / "decision tree" / "real tree"） • 生成顺序建议：先 Tier 3（最具体）→ Tier 2 → Tier 1，便于反向校准抽象度 • 使用 seed 值锁定色彩体系，确保三图视觉家族感 【延伸用法】 • 教师可根据课堂反馈动态调整层级难度，AI重新生成仅需修改1-2个参数 • 学生可自主选择层级材料，支持个性化学习路径 • 学校可建立分层视觉素材库，支持跨学科复用（如"能量流动"适用于生物、地理、经济）