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111 班級_______ 姓名________________ Teaching aims: 1. Learn about some scientists. 2. Master how to prove a new idea in scientific reseach . Important and difficult points :aims 2. 預(yù)習(xí)案： 翻譯下列短語： l draw a conclusion ____________________ 2. think of a method ___________________ 3. collect results _________________________ 4. make a question _____________________ 5. find a problem _________________________ 6. analyse the results ______________________ 7.find supporting evidence _____________________8. put forward ___________________________ 新授案：一、Warming up 《一》Try the quiz and find out who knows the most . 1.Which scientist discovered that objects in water are lifted up by a force that helps them float? A. Charles Darwin B. Archimedes C. Thomas Edison 2. Who wrote a book explaining how animals and plants developed as the environment changed? A. Marie Curie B. Gregor Mendel C. Charles Darwin 3.Who invented the first steam engine? A. Thomas Newcomen B. Archimedes C. Thomas Edison 4. Who used peas to show how physical characteristics are passed from parents to their children. A. Thomas Edison B. Gregor Mendel C. Archimedes 5. Who discovered radium? A. Marie Curie B. Zhang Heng C. Newton 6.Who invented the way of giving electricity to everybody in large cities? A. Stephen Hawking 　B. Archimedes C. Thomas Edison 7.Who was the painter that studied dead bodies to improve his painting of people? A. Gregor Mendel B. Leonardo da Vinci C. Marie Curie 8. Who invented a lamp to keep miners safe underground? A. Sir Humphry Davy B. Thomas Newcomen C. Faraday 9. Who invented the earliest instrument to tell people where earthquakes happened? A. Charles Darwin B. Zhang Heng C. Watt 10.Who put forward a theory about black holes? A. Stephen Hawking B. Archimedes C. Copernicus 《二》Discuss what the scientists have the similarities .(e.g. determined \----------- ) 二、Pre-reading 1. What should scientists do to prove a new idea in scientific research? What order would you put the seven in?____________________________________________ A. Draw a conclusion B . Think of a method C. Collect results D. Make a question E. Find a problem F. Analyse the results G. Find supporting evidence 2.What do you know about infectious diseases? What do you know about cholera ? 三． Reading ：（一） Listening 1.Who defeats “King Cholera“? 2.How many theories did John Snow got interested in? Skimming 1.What happened in 1854? 2.Why was there no death at No. 20 and 21 Broad Street as well as at No. 8 and 9 Cambridge Street? 3. What’s the main idea of the passage? A.John Snow was a well-known doctor in London. B. The cause of Cholera was polluted water. C. The source of all drinking water should be examined. D. How John Snow defeated “King Cholera”? （二）Careful reading : Fill in the table .( 選出正確答案) Steps: What/How? 1.Find a problem ? 2.Make a question ? 3.Think of a method ? 4.Collect results ? 5.Analyse results ? 6. Find supporting evidence ? 7.draw a conclusion ? A. What causes cholera? B. Gather information when another Cholera hit London in 1854. C. Two other deaths. D. The water is to blame. The source of all drinking water should be examined. E. Which theory is correct? F. He marked on a map where all the dead people had lived. G. Looked into the source of the water. 當(dāng)堂檢測：Summary John Snow was a well-known ___________ in London in the ___________ century. He wanted to find the ____________ of cholera in order to ____________ it. In 1854 when a cholera ____________ out, he began to gather information. He ____________ on a map where all the dead people had lived and he found that many people who had drunk the dirty water from the _____________ died. So he decided that the polluted water carried cholera. He suggested that the ____________ of all water supply be ____________ and new methods of _____________ with polluted water be found. Finally, “King Cholera” was defeated. 選做：Discussion: Discuss the following questions in groups of four。 1. Cholera was a 19th century disease. What disease do you think is similar to cholera today? 2.John Snow believed Idea 2 was right. How did he finally prove it? Homework :熟讀課文 學(xué)后思： 111