Unit 3 Sea Exploration Reading and Thinking 课件（含学案）-2025-2026学年高中英语人教版选择性必修第四册

与课件配套使用 Reading and Thinking：Reaching Out Across the Sea Learning Objectives: By the end of this lesson, you will be able to: 1.Use skimming and scanning to sort out the timeline of China’s maritime exploration. 2.Realize the historical and modern value of China’s sea exploration and the vision of a shared future for mankind. 3.Develop logical, critical and creative thinking via information analysis and short speeches. 4.Cooperate in groups and apply AI tools to create and evaluate ideas. Part 1: Before Reading--activate prior knowledge Do you know any stories of sea exploration of ancient and modern times? List 3 examples: ① ② ③ What are the purposes of these sea exploration? Part 2: While Reading Task 1: Skim to identify essay types ( ) Narrative: a story + events ( ) Descriptive : a subject + details ( ) Expository : a subject + facts & explanations ( ) Argumentative : an idea + evidence & reasons Task 2: Scan for the structure of the text How is the text organized? ( ) Time Order ( ) Problem-Solution ( ) Compare-Contrast Task 3: read for details about Sea Exploration Time Explorer/event region purpose Para.2 Silk Road Para.3 Ming Dynasty Para.4 The Belt and Road Initiative Para.5 Understand climate change and its effects Para.6 unknown Sharpen your eyes: Which period does the author spend most time on? What might that suggest? Part 3: Post-Reading Reflection Task 1: Author’s Attitude 1. Find three positive words or phrases the author uses to describe sea exploration. → _________________ , _________________ , _________________ 2. Does the text mention any negative consequences (e.g.war,disease,colonization, overfishing,environmental damage)? If yes, give an example. If no, why do you think the author left them out? 3. What do you think is the author’s main purpose? (Tick one and explain) ☐ To celebrate human courage ☐ To encourage more sea exploration ☐ To record history objectively ☐ To warn against the dangers of exploration Task 2: Fact vs. Opinion ( ) “Zheng He’s fleet reached the east coast of Africa.” ( )“Columbus’s voyage was the greatest event in human history.” ( )“Sea exploration has led to both cultural exchange and conflict.” ( )“Modern technology makes ocean exploration safer than ever before.” Challenge: Find one sentence from the text that looks like a fact but is actually an opinion. Task 3: Debate – Ocean Exploration Council Proposal: “All countries should immediately stop all deep-sea exploration for commercial purposes, unless it can be proven to cause ZERO harm to the ocean ecosystem.” Step 1: Choose your stance (tick one) ☐ Support (stop first) ☐ Oppose (continue but regulate) ☐Conditional support (modify the proposal – my modification: _____________________) Step 2: Prepare your arguments – use the table below From the text (a historical example) A current event (deep-sea mining, nuclear wastewater, Jiaolong, Arctic shipping, etc.) My personal life or observation (plastic, seafood, climate, etc.) Part 4: Homework ☐ Option A :Write a 100-word opinion piece for our school’s English newspaper. Titled:“Reaching Out, Responsibly”; Use at least one idea from the debate. ☐ Option B :Video speech: Record a 1–2 minute speech arguing for your position (support / oppose / conditional). You must mention: · One historical example (from the text) · One modern issue (e.g., deep-sea mining, plastic pollution, climate change) · One personal action you will take to protect the ocean 学科网（北京）股份有限公司 $SEA EXPLORATION By the end of this lesson, students will be able to: 1.Use skimming and scanning to sort out the timeline of China’s maritime exploration. 2.Realize the historical and modern value of China’s sea exploration and the vision of a shared future for mankind. 3.Develop logical, critical and creative thinking via information analysis and short speeches. 4.Cooperate in groups and apply AI tools to create and evaluate ideas. . They (Oceans) provide a breeding ground for life, connect the world and promote development. ---Xi Jinping 海洋孕育了生命，联通了世界，促进了发展。 ---习近平致“2019年中国海洋经济博览会”开幕的贺信 REACHING OUT ACROSS THE SEA What do you know about the ocean? animals plants minerals Ocean influences climate energy What do you know about the three stories? 麦哲伦环游地球 哥伦布发现新大陆 Navigator (航海者) Nationality (国籍) Achievement Time Zheng He Christopher Columbus Ferdinand Magellan Chinese Italian Portuguese made seven voyages to the Western Seas; his voyages are one of the world navigation feats in history made the first voyage around the world discovered a new world 1519 1405-1433 1492 What do you think is the purpose of reaching out across the sea? 6 What are the purposes of the sea exploration? What drives sea exploration ? 2 What are the four major types of essay do you know? Tips for identifying essay types There are four major types of essay: narrative (记叙文), descriptive (描述性文体), expository (说明文), and argumentative (议论文). A narrative essay is a story with the beginning, middle, and end. A descriptive essay describes a subject and lists interesting details. An expository essay is factual, giving information on a subject. Finally, an argumentative essay aims to convince the reader. ① Narrative : a story with a beginning + middle + end. ② Descriptive : a subject + interesting details ③ Expository : a subject+ factual information ④ Argumentative : an idea + to convince the reader Introduction to the topic: Reaching out across the sea Para. 1 Para. 2~3 In the past 1 2 3 4 5 6 Para. 4~5 At present Para. 6 In the future The structure of the text: How is the passage developed? in ancient times in the Ming Dynasty today in recent years far into the future Time Region Result/ Purpose Para. Para. 2 India, the Middle East, Rome, the coasts of the Indian Ocean and Sri Lanka trade deals, cultural awareness Para. 3 the South China Sea, the Indian Ocean, the mouth of the Red Sea, the east coast of Africa Further trade develop relations the ancient sea routes travelled by Zheng He, the Belt and Road Area Para. 4 cooperation and trade, strengthen the bonds, cultural exchange Para. 5 Revisited the Silk Road The Arctic understand climate change and its effects unknown Para. 6 trade and enhance relationships Time sequence. Discussion Facts and Opinions. Which countries reached out across the sea in the past and why? What benefits and problems did those countries get from doing this? What effects did reaching out across the sea in the past have on the world? What do you think is the significance of the Belt and Road Initiative? Facts: European explorers, China, India, Ceylon, African royal families; Opinions: for trade Which countries reached out across the sea in the past and why? What benefits and problems did those countries get from doing this? Facts: They got new products from many different countries and became more aware of other cultures; Opinions: In some cases, this led to invasion and conquest. What effects did reaching out across the sea in the past have on the world? Facts: The land and sea routes remained active channels between different cultures for centuries; Opinions: Generally speaking, the result was positive, as it advanced the spread of knowledge, technology, and goods, and made the world a smaller place. What do you think is the significance of the Belt and Road Initiative? Facts: The aim of this initiative is to encourage cooperation and trade across the historical Silk Road areas, and strengthen the bonds between China and the rest of the world; Opinions: It will lead to greater integration with China and other countries. 1. How does the author describe different explorations? Find positive or negative words. 2. Does the text mention any costs of exploration? If not, what costs can you think of? Author’s Attitude Analysis Micro Forum on Sea Exploration Name Micro Forum on China’s Sea Exploration Content the effect brought by reaching out across the sea the development of China’s sea exploration the challenges that China is facing in sea exploration the significance of the Belt and Road The Ocean Exploration Council proposal All countries should immediately stop all deep-sea exploration for commercial purposes, unless it can be proven to cause ZERO harm to the ocean ecosystem. Attitude · Support – move to the left. · Oppose – move to the right. · Conditional support – stay in the middle. Assignment 1. Write a 150-word mini-editorial titled Reaching Out Responsibly for the school English newspaper. 2. Design an infographic to compare ancient and modern sea exploration, highlighting one core value shift in China’s marine exploration. $