1、Who are they?Who are they?Guessing game1.Who is he?1.Who is he?He has made a famous kite experiment.He learned a lot from it and invented lightningrod(避雷针避雷针).).He is Benjamin FranklinNever leave that until tomorrow, which you can do today.2.Who is he?2.Who is he?He is called the greatest scientist
2、in the 20th century.He is famous for the Theory of Relativity.He is Albert EinsteinImagination is more important than knowledgeimaginative3.Who is he?3.Who is he?He invented electric bulbs.He made more than 1,000 inventions duringhis life.He is Thomas Alva EdisonThomas Alva EdisonGenius is one perce
3、nt inspiration and ninety-nine percent perspiration.4.Who is she?4.Who is she?She is a woman scientist.She discovered radium( (镭镭) )and polonium(钋钋).In her life, she won the Nobel Prize twice.She is Marie CurieNothing in life is to be feared. It is only to be understood.The Only person ever to recei
4、ve two Nobel Prizes , one in physics and the other in chemistry.5. Which scientists discovered that objects in water are lifted up by a force that helps them float?Archimedes阿基米德阿基米德Archimedes, Ancient Greek (287-212 BC), a mathematician.Give me a place to stand on, and I can move the earth.6 . Who
5、wrote a book explaining how animals and plants developed as the environment changed?Charles Darwin达尔文达尔文Britain (1808-1882). “The Origin of Species”7 . Who used peas to show how physical characteristics are passed from parents to their children?Gregore Mendel(1822-1884) Czech (捷克捷克)Inheritance遗传 8 .
6、 Who invented the way of giving electricity to everybody in large cities?Thomas Edison 爱迪生爱迪生Thomas Edison, American, an inventor. He invented the lights and the gramophone.Phonograph 留声机留声机bulbMotion Pictures9 . Who was the painter that studied dead bodies to improve his painting of people?Leonardo
7、 da Vinci 达芬奇达芬奇 Italian, an artist. The Last Supper10. Who invented a lamp to keep miners safe underground?Humphry Davy 汉弗莱汉弗莱 戴维戴维Sir Humphry Davy, British, an inventor and chemist.11. Who invented the earliest instrument to tell people where earthquakes happened?张衡Zhang Heng, ancient China, an in
8、ventor.12. Who put forward a theory about black holes?Stephen Hawking 斯帝芬 霍金British, a physicist.made a great contribution.made great achievements.succeeded in their scientific career.overcome many difficulties.What did they have in common? common characteristicscautiouspersuasivestrictpositiveCo-op
9、erativecreativebrightenthusiasticBrainstorming Do you know how to prove a new idea in scientific research? Discuss in small groups the stages in setting out a new scientific idea. What order would you put them in?Draw a conclusionThink of a methodCollect resultsMake a questionFind a problemAnalyse t
10、he resultsFind supporting evidencePlease put the 7 stages in right order according to the passage. The passage is written as a report of an experiment and there are 7 steps:1.Find a problem:(发现问题发现问题)2.Make up a question:(形成研究主题形成研究主题)3.Think of a method:(找出研究方法找出研究方法)4.Collect results:(收集材料收集材料)5.A
11、nalyse results:(分析材料分析材料)6. Find supporting evidence(找到有力证据找到有力证据)7.Draw a conclusion:(得出结论得出结论) Infectious diseases can be spread to other people. They have an unknown cause and need public healthcare to solve them. It is a kind of terrible disease caused by drinking dirty water and it caused a lot
12、 of deaths in the old times and it was very difficult to defeat.John SnowDo you know this person?vA well-known doctor in the 19th century in London. vA legendary figure in epidemiologyep,di:mi:ldi:(流行病学流行病学) and anesthesiology (麻醉学麻醉学) nis,izildiJohn Snow ( 1813 1858) Whats the main idea of the pass
13、age?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 collected, analyzed data and found the cause of the disease and solved it .Read the passage and number these events in the order that
14、they happened._ John Snow began to test two theories._ An outbreak of cholera hit London n 1854._ John Snow marked the deaths on a map._ He announced that the water carried the disease._ John Snow investigated two streets where the outbreak was very severe._ King Cholera was defeated._ He found that
15、 most of the deaths were near a water pump._ He had the handle removed from the water pump.12345678I. To prove a new scientific idea, seven stages are needed. Read the text (P2-3) carefully and fill in the blanks.Para-graphStages in an experimentExample in this investigation1Find a problem2Make up a
16、 question3Think of a method4Collect results5Analyse results6Find supporting evidence7Make a conclusionWhat caused cholera?Which theory is correct?Analyse the water to see if that is the cause of cholera.Find other evidence to confirm your conclusion.The water is to blame. The source of all drinking
17、water should be examined so that it is safe.Collect data on those who were ill or died and where they got their water.Plot information on a map to find out where people died or did not die.Stage 1 Find a problemA large number of people died of cholera, but neither its 1. _ nor its 2. _ was understoo
18、d.Stage 2 Make a question Theory one: Cholera 3. _ in the air and floated around until it found its victims. Theory two: When people 4. _ cholera into their bodies with meals, their bodies were attacked.cause absorbed multipliedcureStage 3 Think of a methodBegan to gather information to 5. _ that th
19、e second theory was correct.Stage 4 Collect resultsMarked where the dead people had lived on a(n) 6. _.Stage 5 Analyse the resultsLooked into the 7. _ of the water to see if the problem was the water.map provesourceBroad StreetMany deaths happened here.No death happened here.The water from the pump
20、was to blame.Public houseStage 6Find supporting evidenceFound supporting evidence from two other deaths: Both of them died of cholera after 8. _.Stage 7Draw a conclusion 9. _ carried the virus. All the water supplies should be 10. _. drinking the water Polluted waterexaminedextra evidence: A woman a
21、nd her daughter who lived far away but drank the water also died.Fill in the blanks according to the text.John Snow，a wellknown doctor in London，became 1._(inspire)when he thought about helping ordinary people 2._ (expose) to cholera，a 3._(die)disease of its day. Many thousands of people died 4._ th
22、ere was an outbreak because no one knew the cause of it.John wanted to help solve the problem. He got interested in two theories 5._ (explain) how cholera killed people.He believed in the second theoryinspiredexposeddeadlywheneverexplaining6._ suggested that people7._(absorb) the disease with their
23、meals. In 1854，when another outbreak hit London，he was ready to test 8._ two theories.9._ the help of the map he made，he got a valuable clue about the cause of the disease and was able to announce that the water was 10._(blame)“King Cholera” was finally defeated.thatabsorbedtheWithto blame1. John Sn
24、ow believed Idea 2 was right. How did he finally prove it? He found an outbreak that was clearly related to cholera. He collected, analyzed the data and found the cause of the disease and solved it .2. Do you think John Snow would have solved this problem without the map?No. I dont think so. The map
25、 helped John Snow organize his ideas. Yes, I think he would. But he would spend more time in testing the two theories and it would be more difficult for him to look into the cause of cholera.3. Cholera is a 19th century disease. What disease do you think is similar to cholera today? Two diseases, wh
26、ich are similar today, are SARS and AIDS because they are both serious, have an unknown cause and need public health care to solve them. Avoid raw salads and vegetables. Avoid food and drinks from street vendors. Boil it, cook it, peel it, or forget it.Read the text carefully. Retell the passage with your own wordsRemember the new words and phrases
