UNIT1 SCIENCE AND SCIENTISTS Reading And Thinking -2025-2026学年高二英语精美课件（人教版选择性必修第二册)

该高中英语课件围绕“约翰·斯诺战胜霍乱”展开阅读与思考，课堂导入结合新冠等流行病，联系霍乱症状与病因理论，引导学生梳理科学研究步骤（发现问题、收集数据等），构建从现象探究到方法应用的学习支架。 其特色在于融合视频观看、地图数据分析与小组讨论，通过“问题链设计+证据验证活动”培养思维品质（严谨、细节导向）和语言能力（提问、写作）。如标记死亡地图验证水源病因，角色代入任务提升探究兴趣，助力学生掌握科学探究方法，教师可借助结构化活动高效开展教学。

John Snow Defeated King Cholera UNIT1 SCIENCE AND SCIENTISTS Reading And Thinking Are you familiar with these situation? Besides coronavirus,what other kinds of epidemics do you know? Watch a video about cholera What are the symptoms (症状) of Cholera？ severe vomiting (呕吐) diarrhea (腹泻) dehydration(脱水) John Snow, (born March 15, 1813, York, Yorkshire, England—died June 16, 1858, London), English royal physician known for his seminal studies of cholera and widely viewed as the father of contemporary epidemiology. John Snow Defeats King Cholera Look at the title and then listen to the passage to get information about the infectious disease. Who ? How ? What ? The text is mainly about ___________ and _____ he defeated ____________. John Snow how Cholera What does “ King ” imply in the title? Cholera is powerful and hard to cure Discuss the following stages of scientific research in groups.What oder would you put them in? find a problem ask a question think of a method collect data analyse the results find supporting evidence draw a conclusion John Snow Defeats King Cholera collected analysed data found the cause of the disease defeated it How? Use the stages in examining a new scientific idea to describe each paragraph. para1 para2 para3 para4 para5 find a problem ask a question collect data find supporting evidence draw a conclusion What causes cholera? Which theory is correct? Mark information on a map to find out where people died or did not die. Find other evidence to confirm the conclusion. The water is to blame. The source of all drinking water should be examined so that it is safe. P1 John Snow A _________doctor who even attend _______________ when she gave birth. He had desire to ________________once and for all. famous Queen Victoria destroy cholera Theory 1: caused by ________ Theory 2: caused by ________ an infection from germs bad air Which theory did he subscribe to? What were the two contradictory theories? P2 P3 1. What method did John Snow use? 2. What did he find on the map? What did he do to deal with it? A map of Broad Street Many deaths happened here. No deaths happened here. beer pub Find supporting evidence & Draw a conclusion Place Person Event In another part of London A woman and her daughter Died of cholera because of drinking the water delivered from the pump Remove the handle of the pump The disease was stopped. Pump water carried the cholera germs. Read from Para.2-3 again and complete the chart below. A: It was believed that cholera was caused by bad ____ or germs in _______________. C: Many deaths occurred near the ___________ in Broad Street. Some people __________ drunk the water from the pump, and lived. D: The pump water carried ____________. E: The _______ of the pump was removed. B:Snow___________________the places where the people who _____ had lived A woman and her daughter died in another part of London after ___________ _____________. air food or water marked on the map died water pump hadn’t drinking water from the pump cholera germs handle P4 The water from the Broad Street pump had been infected by waste.Some companies sold water from the River Thames that was polluted by . What caused the outbreak of cholera in London in 1854? raw waste P5 Water companies began to sell clean water. The threat of cholera around the world saw a substantial decrease. We know how to prevent cholera thanks to the work of John Snow. Snow transformed the way scientists study diseases. What contributions did John Snow make? Ask questions One way to approach a reading passage is to ask questions about it.Asking questions can help you understand the cotent .It can also help you think more deeply about the topic. Post Reading Write out the questions according to the answer. A:Snow thought that cholera was caused by germs in food or water. A:Snow had the handle of the pump removed so that it could not be used. Q:What Q:Why did John Snow think caused the cholera? did John Snow have the handle from the pump removed？ Q:How was the cholera? A:The cholera threat was defeated thanks to the work of John Snow. What qualities do you think the John has? brave determined strong-willed detail-oriented (注重细节的) rigorous (严谨的) / careful hard-working innovative (创新的) passionate(有激情的) ambitious deligent Suppose you were a time traveler and happened to be the assistant of John Snow,can you give the boy some advice on saving his father? Combined with the modern medical knowledge,how to prevent the cholera? Safe Water (安全用水) - Drink: Boiled/chlorinated/filtered water (煮沸/氯化/过滤水) - Avoid: Untreated water (未处理水) - Store: Clean, covered containers (干净密封容器) Sanitation & Hygiene (卫生防疫) - Toilets: Improved facilities (改良卫生设施) → No open defecation (禁止露天排便) - Hands: Soap + safe water (肥皂+安全水) → Before eating/after toilet (饭前便后) - Surfaces: Disinfect (消毒) → Kitchen counters/doorknobs (厨房台面/门把手) Combined with the modern medical knowledge,how to prevent the cholera? Food Safety (食品安全) - Eat: Thoroughly cooked, hot food (彻底煮熟的热食) - Avoid: Raw seafood (生海鲜)/undercooked food (未煮熟食物)/unpasteurized dairy (未巴氏杀菌乳制品) - Fruits/Veggies: Peel (削皮) or wash with safe water (用安全水清洗) Vaccination & Public Health (疫苗与公共卫生) - Vaccines: OCVs (口服霍乱疫苗) → High-risk areas (高风险地区) - Education: Public prevention campaigns (公共预防宣传) - Response: Water testing (水质检测) + patient isolation (患者隔离) Thank You For Watching x264 0.128.2216+688+32 a17ff54 tMod [8-bit@4:2:0 X86] $