Unit 1 Science and Scientists Reading and Thinking作业设计 2026-2027学年高中英语人教版选择性必修第二册

高中英语（人教版）选择性必修二 Unit 1 Science and Scientists Reading and Thinking作业设计 情境创设：亲爱的同学！学校“科学侦探社”正在招募新成员！ 入社考核任务：选择一位科学家，还原其重要发现的调查过程，制作一份“科学侦探档案”。优秀作品将在学校科技节英文展区展出，并有机会被推荐到校英文广播站播出。 你的第一个任务：还原约翰·斯诺调查霍乱病源的“破案”过程。 作业任务链 【课前预习作业】读前侦探准备（约15分钟） 任务一：背景调查（必做） 用英语回答以下问题，为课堂阅读做好准备： 1. What is cholera? How does it spread? 2. Who was John Snow? What was his profession? 3. What was the “miasma theory”? Why was it widely believed in the 19th century? 4. Look at the title “John Snow Defeats ‘King Cholera’”. Why is cholera called “King”? What do you think the passage will tell us? 任务二：词汇预热（必做） 根据英语释义写出对应单词，并尝试用其中3个词写一句话预测课文内容。 a disease that causes severe diarrhoea and can lead to death to say that something is likely to be true to make something less or smaller in size, quantity, or degree a person who has been attacked, injured, or killed to support an idea or opinion very bad or serious 【课中/课后作业】读中侦探调查（约30分钟） 任务三：案件卷宗（必做） 用英语完成约翰·斯诺的“案件卷宗”，梳理科学探究全过程。 Case name The mystery of cholera Time&place 1854,London Suspect (wrong theory) Miasma theory (bad air) Key evidence 1. Map marks:deaths concentrated around Broad Street pump 2. Two other deaths: a woman and her daughter who drank water from the pump 3. The pump water was polluted Conclusion Cholera was spread by polluted water, not bad air Significance The beginning of modern epidemiology 要求：使用本课至少5个核心词汇（如 suspect, blame, decrease, severe, contradictory, subscribe to, once and for all 等）。 任务四：证据链分析（必做） 根据课文内容，绘制约翰·斯诺的调查流程图，并用英语标注每一步。要求使用至少2个表语从句。 示例： · The problem was that no one knew the cause of cholera. · His assumption was that cholera was spread by polluted water. · The evidence was that deaths were concentrated around the Broad Street pump. · The conclusion was that the water pump was to blame. 任务五：侦探日记（必做） 假设你是约翰·斯诺的助手，跟随他参与了1854年伦敦霍乱调查。请写一篇英文侦探日记（约100词），记录某一天调查的过程和你的感受。 要求： · 使用第一人称，体现角色代入感。 · 包含至少5个本课重点词汇。 · 体现科学探究的步骤和科学精神。 【课后迁移创新作业】读后侦探拓展（选做，按需选择） 任务六：科学侦探档案（选做，二选一） · 选项A：选择另一位科学家（如屠呦呦、袁隆平、弗莱明、巴斯德等），参照约翰·斯诺的“案件卷宗”格式，制作一份英文科学侦探档案。要求包含：研究问题、提出假设、搜集证据、分析结果、得出结论、科学精神。 · 选项B：以“What Makes a Great Science Detective”为题，写一篇英文短文（约120词），分析科学家必备的品质，要求使用至少2个表语从句。 任务七：多模态产出（选做，四选一） · ① 英文信息图/海报：制作一张展示约翰·斯诺调查过程的信息图，配英文说明，用于学校科技节展览。 · ② 英文播客：录制一段3分钟英文播客，讲述“约翰·斯诺如何战胜霍乱王”，包含开场、故事讲述、结尾总结。 · ③ 英文短剧：编写并表演一个3分钟英文短剧，再现约翰·斯诺调查的关键场景（如地图标记、水泵调查、说服当局）。 · ④ 英文展板：制作一份英文展板，主题为“Science Heroes Who Changed the World”，介绍约翰·斯诺的科学贡献与精神。 任务八：侦探社面试（选做） 录制一段2分钟英文视频，模拟科学侦探社面试。内容包括： · 自我介绍（为什么想加入侦探社） · 展示你的科学侦探档案 · 说明你从约翰·斯诺身上学到的科学精神 · 表达你未来想探索的科学问题 评价方案 （一）评价原则 · 过程性与终结性相结合：关注调查过程、合作表现与最终成果。 · 多元主体评价：教师评价 + 同伴互评 + 学生自评。 · 分层评价：基础层侧重准确性，提升层侧重流畅性，拓展层侧重创造性。 （二）评价工具 “科学侦探档案”评价量表 评价维度 评价标准 分值 信息准确性 科学事实准确，调查步骤清晰，证据链完整 25分 语言表达 词汇丰富，句式多样，表语从句使用恰当 25分 逻辑条理 因果关系明确，叙事流畅，结构合理 20分 创意呈现 档案设计有创意，角色代入感强，视觉效果好 20分 科学精神 体现对科学探究方法和科学家品质的理解 15分 以下为 人教版选择性必修二 Unit 1 Science and Scientists Reading and Thinking 作业设计的参考答案。答案不唯一，可根据学生水平调整。英文部分尽量使用本课核心词汇和表语从句。 【课前预习作业】读前侦探准备 任务一：背景调查（必做） 1. What is cholera? How does it spread? Cholera is a severe disease that causes diarrhoea and dehydration, and it can lead to death. It usually spreads through polluted water or food, especially when sanitation is poor. 2. Who was John Snow? What was his profession? John Snow was a famous British doctor and physician in the 19th century. He is often called the father of modern epidemiology because of his study of cholera. 3. What was the “miasma theory”? Why was it widely believed in the 19th century? The miasma theory held that diseases such as cholera were caused by bad air or foul smells from decaying matter. It was widely believed because germ theory was not yet well understood, cities were dirty and smelly, and many scientists subscribed to this theory. 4. Look at the title “John Snow Defeats ‘King Cholera’”. Why is cholera called “King”? What do you think the passage will tell us? Cholera is called “King” because it was a deadly and powerful disease that killed many people and seemed to rule over London. I think the passage will tell how John Snow investigated the 1854 cholera outbreak, challenged the miasma theory, found the polluted water pump, and defeated “King Cholera” through scientific evidence. 任务二：词汇预热（必做） 根据英语释义写出对应单词： 1. a disease that causes severe diarrhoea and can lead to death → cholera 2. to say that something is likely to be true → suspect 3. to make something less or smaller in size, quantity, or degree → decrease 4. a person who has been attacked, injured, or killed → victim 5. to support an idea or opinion → subscribe to 6. very bad or serious → severe 用其中3个词写一句话预测课文内容： I suspect that the text will show how John Snow used evidence to prove that polluted water was to blame for the severe cholera outbreak, and how the number of deaths decreased after the pump handle was removed. 【课中/课后作业】读中侦探调查 任务三：案件卷宗（必做） Case name The Mystery of Cholera Time & place 1854, London Suspect (wrong theory) Miasma theory (bad air). Many scientists subscribed to it, but John Snow suspected it was wrong. Key evidence 1. Map marks: deaths were concentrated around the Broad Street pump. 2. Two other deaths: a woman and her daughter who drank water from the pump died. This was contradictory to the miasma theory. 3. The pump water was polluted. Conclusion Cholera was spread by polluted water, not bad air. The water pump was to blame. Action Snow had the handle removed from the pump. Soon the disease slowed down and deaths decreased. Significance The beginning of modern epidemiology. It helped people understand how to defeat “King Cholera” once and for all. 核心词汇使用： suspect, subscribe to, severe, contradictory, blame, decrease, once and for all. 任务四：证据链分析（必做） John Snow’s Investigation Flow Chart Problem The problem was that no one knew the cause of cholera, and many people subscribed to the miasma theory. ↓ Hypothesis His assumption was that cholera was spread by polluted water, not bad air. ↓ Evidence Collection He marked the exact places where the dead people had lived on a map. The evidence was that deaths were concentrated around the Broad Street pump. ↓ Further Evidence A woman and her daughter who drank water from the pump died, while some people who did not drink it were not affected. ↓ Analysis He found that the pump water was polluted, and the evidence was contradictory to the miasma theory. ↓ Conclusion The conclusion was that the water pump was to blame. ↓ Action He had the handle removed from the pump, and the number of deaths decreased. ↓ Significance The significance was that it began modern epidemiology and showed the power of evidence-based science. 表语从句： · The problem was that no one knew the cause of cholera. · His assumption was that cholera was spread by polluted water. · The evidence was that deaths were concentrated around the Broad Street pump. · The conclusion was that the water pump was to blame. · The significance was that it began modern epidemiology. 任务五：侦探日记（必做） September 8, 1854 Dear Diary, Today I helped Dr John Snow investigate the severe cholera outbreak. Many people still subscribed to the miasma theory, but Dr Snow suspected that bad air was not the cause. We marked the victims’ homes on a map. The evidence showed that most deaths were near the Broad Street pump. A woman and her daughter who drank the polluted water also died. The pump was to blame. When the handle was removed, the number of deaths decreased. I learned that a true scientist must question old beliefs and follow the evidence. (约105词) 使用词汇： cholera, severe, subscribed to, suspected, victims, evidence, polluted, blame, decreased. 【课后迁移创新作业】读后侦探拓展 任务六：科学侦探档案（选做，二选一） 选项A：科学侦探档案——屠呦呦 Case name The Mystery of Malaria Time & place China, 1960s–1970s Research question How can malaria be treated effectively? Suspect (wrong idea) Existing drugs were not effective, and some people doubted traditional Chinese medicine. Hypothesis A herb called qinghao might contain a substance that could treat malaria. Evidence Ancient books recorded qinghao for fever. Tu Youyou’s team tested many extracts, and a low-temperature extract was effective in experiments. Analysis The active compound, artemisinin, killed malaria parasites. Conclusion Artemisinin was an effective treatment for malaria. Significance It saved millions of lives, and Tu Youyou won the 2015 Nobel Prize. Scientific spirit Persistence, careful observation, teamwork, open-mindedness, and the courage to test traditional knowledge with modern science. 选项B：短文 What Makes a Great Science Detective What makes a great science detective? The first quality is that they are curious and never stop asking questions. Another quality is that they do not simply subscribe to old theories; they test them with evidence. John Snow is a good example. His assumption was that cholera was spread by polluted water, not bad air. He collected evidence, drew a map, and found that the Broad Street pump was to blame. A great science detective must also be brave, careful, and honest. The most important thing is that they follow the evidence, even when it contradicts common beliefs. This is how science moves forward. (约120词) 表语从句： · The first quality is that they are curious... · Another quality is that they do not simply subscribe to old theories... · His assumption was that cholera was spread by polluted water... · The most important thing is that they follow the evidence... 任务七：多模态产出（选做，四选一） ① 英文信息图/海报文字说明 Title: John Snow vs. King Cholera Problem: In 1854, cholera was a severe disease in London. No one knew its cause. Wrong Theory: Many people subscribed to the miasma theory—bad air caused disease. Hypothesis: John Snow suspected that polluted water was the real cause. Evidence: He marked deaths on a map. Most deaths were around the Broad Street pump. Key Case: A woman and her daughter who drank from the pump died. Action: Snow had the pump handle removed. Result: The disease slowed down and deaths decreased. Conclusion: The pump water was to blame. Significance: This began modern epidemiology. ② 英文播客脚本（约3分钟） [Intro music] Host: Welcome to Science Detectives. Today, we tell the story of how a doctor defeated “King Cholera.” Host: In 1854, London was hit by a severe cholera outbreak. Many people subscribed to the miasma theory. They believed bad air caused the disease. But John Snow suspected that bad air was not the cause. Host: He began to investigate. He marked the homes of the victims on a map. The evidence showed that most deaths were concentrated around the Broad Street pump. A woman and her daughter, who lived far away but drank water from the pump, also died. The pump water was polluted. Host: Snow concluded that the water pump was to blame. He had the handle removed. Soon, the number of deaths decreased. His work became the beginning of modern epidemiology. Host: What can we learn from John Snow? A good science detective questions old ideas, collects evidence, and follows the truth. Thank you for listening. [Outro music] ③ 英文短剧脚本（约3分钟） Characters: John Snow, Assistant, Official, Woman Scene 1: The Map John Snow: Look at this map. Most deaths are near the Broad Street pump. Assistant: But many scientists subscribe to the miasma theory. They say bad air is the cause. John Snow: I suspect they are wrong. We need evidence. Scene 2: The Pump Woman: My daughter and I drank water from that pump. Now she is dead. John Snow: I am sorry. This is important evidence. The water may be polluted. Assistant: Dr Snow, what should we do? John Snow: The pump is to blame. We must remove the handle. Scene 3: The Official Official: Dr Snow, are you sure? People believe in bad air. John Snow: The evidence is clear. Deaths are concentrated around this pump. Please let me remove the handle. Official: Very well. Do it. Narrator: After the handle was removed, the disease slowed down and deaths decreased. John Snow had defeated “King Cholera” with science. ④ 英文展板文字 Science Heroes Who Changed the World: John Snow John Snow was a British doctor in the 19th century. In 1854, a severe cholera outbreak hit London. At that time, many people subscribed to the miasma theory. They believed bad air caused cholera. However, John Snow suspected that polluted water was the real cause. He marked the deaths on a map and found that they were concentrated around the Broad Street pump. A woman and her daughter who drank water from the pump died. The evidence was clear. Snow had the handle removed from the pump, and the number of deaths decreased. His conclusion was that the water pump was to blame. His work began modern epidemiology and showed the importance of evidence, careful observation, and scientific courage. 任务八：侦探社面试（选做） 2分钟英文视频脚本 Good morning, everyone. My name is Li Hua, and I want to join the Science Detective Club. I am curious about how science solves real-world problems, and I enjoy asking questions and looking for evidence. I have made a science detective file about John Snow. It shows how he investigated the 1854 London cholera outbreak. Many people subscribed to the miasma theory, but John Snow suspected that bad air was not the cause. He marked deaths on a map and found that they were concentrated around the Broad Street pump. The pump water was polluted, so the pump was to blame. After he removed the handle, the number of deaths decreased. From John Snow, I learned that a great scientist must be brave, careful, and honest. The most important thing is that they follow the evidence, even when it contradicts common beliefs. In the future, I want to explore how science can solve environmental and health problems, such as water pollution and climate change. I hope I can become a real science detective. Thank you. 评价量表使用提示 教师可依据原评价量表，从以下四方面评分： 1. 信息准确性：科学事实、调查步骤、证据链是否完整。 2. 语言表达：核心词汇是否丰富，表语从句是否使用恰当。 3. 逻辑条理：因果关系、叙事顺序、结构是否清晰。 4. 创意呈现：档案设计、角色代入、视觉或多媒体效果是否有创意。 以上答案可作为学生参考模板，也可鼓励学生加入自己的语言和创意。 学科网（北京）股份有限公司 $