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课 题 Unit 4 The wonders of nature Section A 2a-2d 年 级 八 课 时 第二课时
教学目标 1. 语言能力：能听懂关于“深海探索”的对话，掌握核心词汇（deep sea, depth, vessel, dive, rubbish, unusual, create, protect）及短语（reach the depth, dive into, compare with, even at... metres deep）；能运用一般现在时和现在完成时描述事实与研究成果。2. 思维品质：通过图表 labeling 和听力信息提取，培养空间认知与数据解读能力；在讨论中发展批判性思维，思考人类活动对深海生态的影响。3. 文化意识：了解中国在深海探测领域的成就（如“奋斗者号”），增强民族自豪感；树立保护海洋生态环境的责任意识。4. 学习能力：学会利用视觉辅助工具（如图表、刻度尺）理解抽象概念；通过听力预测、关键词捕捉等策略提升听力效率；在合作探究中主动查阅资料并分享发现。
教学重难点分析 重点：1. 准确匹配深海深度标签（2a）并理解不同深度的地理/生物意义。2. 听懂对话中关于深海研究目的、中国潜水器成就、动物特征及污染现状的关键信息（2b-2c）。3. 能基于听力内容提出延伸问题并进行同伴问答（2d）。难点：1. 理解大数字（如 10,909 metres）和单位换算（metres vs kilometres）在语境中的实际含义。2. 区分“fact”与“opinion”，尤其在讨论“为何要保护深海”时。3. 在口语输出中自然使用比较结构（e.g., deeper than..., more unusual than...）和被动语态（e.g., was reached, are created）。
教学环节
Step 1 Warm-up & Lead-in (Activate Prior Knowledge)1. Question Storm: Ask: “What do you know about the deep sea ” Write student answers on board (e.g., dark, cold, strange animals, no light).2. Picture Prediction: Show the ocean depths diagram (2a) without labels. Ask: “Which part is deepest Where might whales dive Where did Titanic sink ” Elicit guesses.3. Vocabulary Preview: Pre-teach key terms using visuals: depth, vessel, dive, rubbish, unusual. Use realia or short video clips if available. Step 2 Visual Literacy & Labeling (2a)1. Individual Work: Students read the four descriptions (A-D) and label them on the diagram.- A. Depth Fendouzhe reached → 10,909 m- B. Depth at which the deep sea begins → ~200 m
- C. Depth at which the Titanic rests → 3,800 m
- D. Deepest dive of a whale → ~2,000 m2. Pair Check: Compare answers with partner. Discuss why each depth matters (e.g., sunlight zone vs midnight zone).3. Class Confirmation: Teacher reveals correct answers via PPT. Highlight scale: “10,909 metres = over 10 km — deeper than Mount Everest is tall!” Step 3 Listening for Gist & Details (2b-2c)1. Pre-listening Prediction (2b): Look at the 6 topics. Predict which ones will be discussed. Tick your guesses.2. First Listening (2b): Listen and tick the actual topics discussed. Focus on main ideas.3. Second Listening (2c): Complete sentences with exact words/phrases from conversation:- 1. People still don’t know much about the deep sea.- 2. In 2020, China’s Fendouzhe dived into the deep sea and reached it.- 3. Many deep-sea animals are small and unusual.- 4. Some animals have unusual abilities. Some are blind but can “see” with sound. Some can even create light.- 5. There is rubbish even at 10,909 metres deep.4. Post-listening Check: Play audio again for verification. Clarify tricky parts (e.g., “create light” = bioluminescence). Step 4 Critical Thinking & Extension (2d)1. Brainstorm Questions: Read the 4 sample questions in 2d. Add 2 more you’d like to ask the researcher (e.g., “How do scientists collect samples ” / “Can humans live there someday ”).2. Research Task (Optional Homework Prep): Assign groups to research one question using tablets/books. Prepare 1-minute answer.3. Partner Q&A: Role-play: One student = researcher, other = curious classmate. Ask and answer 2–3 questions using target language.- Sentence frames: “I wonder…”, “According to my research…”, “It’s believed that…” Step 5 Summary & Emotional Sublimation1. Mind Map Recap: Draw simple map on board: Deep Sea → Depths → Animals → Human Exploration → Pollution → Protection.2. Value Sharing: Emphasize: “The deep sea is Earth’s final frontier — mysterious, fragile, and worth protecting.” Connect to SDG 14 (Life Below Water).3. Call to Action: “You don’t need to dive to help — reduce plastic use, support ocean conservation, stay curious!”
作业布置 必做：Write 5 sentences summarizing what you learned today using at least 3 new vocabulary words (e.g., depth, vessel, unusual, rubbish, protect).选做：Create a “Deep Sea Fact Card” with an illustration and 3 amazing facts (include one about Chinese achievement). Present next class.
板书设计 Unit 4 The wonders of nature (Section A 2a-2d)Key Vocabulary:- deep sea, depth, vessel, dive, rubbish, unusual, create, protect- reach the depth, dive into, even at... metres deepOcean Depths Diagram: 200m → Deep sea begins 2,000m → Whale’s deepest dive 3,800m → Titanic rests 10,909m → Fendouzhe’s recordListening Facts:1. Unknown: deep sea2. 2020: Fendouzhe reached it3. Animals: small & unusual4. Abilities: blind but “see”, create light5. Pollution: even at 10,909m!Discussion Starters:- What is the largest shark... - Why is the deep sea important...

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