Unit 1 Science and scientists Reading and Thinking 课件-2025-2026学年高中英语人教版选择性必修第二册

Defeats King Cholera 1. Get information about how John Snow defeated cholera; 2. Figure out the stages for John Snow's scientific research; 3. Extract John’s qualities and scientific spirits. Learning objectives You will be able to: What disease can you think of when you look at these pictures? COVID-19 Activity1 lead-in Lead-in History repeats itself! In 1854,there was also an epidemic disease. cholera What are the symptoms (症状)of Cholera？ What are the symptoms (症状)of Cholera？ diarrhea severe vomiting dehydration Lead-in Lead-in Let’s read the text and find out the solutions! JOHN SNOW DEFEATS “KING CHOLERA” Who was John Snow? How did John Snow defeat King Cholera? What is King Cholera? Activity2 prediction analyze the results ask a question collect data think of a method find a problem find supporting evidence draw a conclusion Can you put the research stages in right order? Activity2 prediction Activity3 Read Para1 and finish the information cards. John Snow King Cholera Identity: Time and place: Result: Occupation: Nationality: Desire: one of ______________________ in the world Millions of people _____________. the most feared diseases Britain died from it A famous _______ (who even attend to _____________) doctor Queen Victoria to destroy cholera once and for all ___________________________ __________________________ In the early 19th century/ Europe __________________________ IN CONSEQUENCE (OF STH) 10 Activity 4 Read para2 and find the theories. Stage 1 find a problem What were the 2 contradictory theories? Theory 1: Cholera was caused by ________ bad air Theory 2: Cholera was caused by ________ an infection from germs Which theory did he subscribe to? theory. It was correct, but he still needed proof. Consequently, when an outbreakof cholera hit London in 1854, Snow began to investigate. He discovered that in twoparticular streets the cholera outbreak was so severe that more than 500 people died inten days. He was determined to find OUt why. Para. 2 It was correct, but he still needed proof. Consequently, when an outbreak of cholera hit London in 1854, Snow began to investigate. He discovered that in two particular streets the cholera outbreak was so severe that more than 500 people died in ten days. He was determined to find out why. Stage 2: ask a question Why did so many people die in these 2 streets? What did John Snow discover when another outbreak hit London? Activity5 Read para3 and mark on the map. Stage3: think of a method 1. Which house had more than 4 deaths in Broad Street? What similarity do they have? 2. Which house had no deaths in the streets ？ Why? What method did John Snow use? mark on a map Notes: : multiple deaths : no death : bar : water pump Para. 3 Stage 4: collect data 1. Which house had more than 4 deaths in Broad Street? What similarities did they have? 2. Which house had no deaths？ Why? Para. 3 Stage 5: analyze the results Snow suspected that _____________was to blame. the water pump _______________________died in another part of London after drinking water ________________. stage7:draw a conclusion The pump water____________________ solution He had _____________________removed . A woman and her daughter carried cholera germs. the handle of the pump from the pump Activity6 Find supporting evidence, conclusion and the solution. stage 6 :find supporting evidence A: It was believed that cholera was caused by bad ____ or germs in _______________. B:Snow___________________the places where the people who _____ had lived C: Many deaths occurred near the ___________ in Broad Street. Some people __________ drunk the water from the pump, and lived. A woman and her daughter died in another part of London after ________________________. D: The pump water carried ____________. E: The _______ of the pump was removed. handle air food or water marked on the died water pump hadn’t drinking water from the cholera germs map pump Activity7 Read Para.2-3 again and complete the chart below. conclusion evidence process solution theories 17 Activity8 Read para4 and explore the truth. What caused the outbreak of cholera in London in 1854? The water from the Broad Street pump had been badly infected by waste. Water companies sold water from River Thames that was polluted by raw waste. Activity9 Read para5 and answer the question. What contributions did John Snow make? Was cholera destroyed completely? No The father of modern epidemiology 【King Cholera】 Each year, millions of people around the world get cholera and many die from me! Cholera is still a problem. Cook raw food 1.How can we prevent the cholera? Activity10 Discussion keep flies away throw rubbish timely build toilets wash hands often wash & peel the food drink and use safe water cook raw food thoroughly Activity 10 discussion 2. What qualities makes John Snow a great scientist? responsible brave/courageous committed/devoted/dedicated critical thinking creative questioning mind curious determined... innovative What spirits do Chinese scientists have in common? strong sense of social responsibility courage to face difficulties dedication critical thinking creativity questioning mind ... It is the spirit that shapes them. it is the spirit that shapes our motherland. “A nation thrives(繁荣) when its science and technology thrive, and a strong science and technology sector is the corner stone(基石) of a strong nation.” ——President Xi The future of the world is in the hands of yours! backbones 脊梁 Compulsory: Write a passage to introduce the scientist that you admire most. Optional: Search some information about Chikungunya(基孔肯雅热） homework Thank you! $