1、Unit 1 Unit 1 Great Scientists Great ScientistsB.ArchimedesC.Thomas EdisonA.Charles Darwin1.Which scientist said,1.Which scientist said,“give me a place to give me a place to stand on,and I can move the earth.stand on,and I can move the earth.”?2.Who invented the first steam engine?2.Who invented th
2、e first steam engine?A.Thomas NewcomenC.Thomas EdisonB.Archimedes3.Who invented the earliest instrument to tell 3.Who invented the earliest instrument to tell people where earthquakes happened?people where earthquakes happened?A.Charles DarwinC.Watt B.Zhang Heng4.Who put forward a theory about black
3、 holes?4.Who put forward a theory about black holes?A.Stephen HawkingC.CopernicusB.Archimedes5.Who did great contribution to defeating 5.Who did great contribution to defeating the Sars?the Sars?A.Zhong NanshanC.Qian XueshengB.Stephen Hawkinginfectious diseasecholeraJohn SnowWhen you eat some seafoo
4、d,unclean food or drink polluted water.You feel(for example)Maybe you have got _.Cholera1.Do you know what this map was used for in 1854?2.Find out the cause of Cholera.John Snow Defeats John Snow Defeats“King CholeraKing Cholera”2.What is the cause of Cholera?The map helped John Snow test the two t
5、heories,and gave a valuable clue about the cause of the disease.It seemed that the water was to blame.Fast reading:Fast reading:1.What was this map used for in 1854?Part1Part2Part3part4(Para.1)(Para.2)(Para.3-5)(Para.6)Introduction of John Snow and CholeraIntroduction of two theoriesStudy of the out
6、break in 1854Prevention of Cholera and John Snow defeated King CholeraCareful reading:Careful reading:find the main idea of each part.find the main idea of each part.2.When did Dr.Snow think the disease would be controlled?He knew it would never be controlled until its cause was found.Part 1:Part 1:
7、1.Why cant they control the disease at the beginning?Because neither its cause,nor its cure was understood.John Snow Defeats John Snow Defeats“King CholeraKing Cholera”Part 1:Introduction of John Snow and CholeraPart 2:Two theoriesPart 3:Study of the outbreak in 1854 Find a Problem:Make a question:W
8、hat is the cause of the cholera?Which is right?Paragraph 3:Paragraph 3:1.What did John Snow do when another outbreak hit London in 1854?.He was ready to test the two theories.He began to gather information.He marked on a map where all the dead people had lived.Result:the water was to blame.Result:th
9、e water was to blame.1 death2 death5 death1,2,30,40:numbers of housesThink a method:mark on a mapCollect and analyze resultsCollect and analyze resultsresult1Water was the cause of the choleraWater was the cause of the choleraresearchLook into the _of the water Look into the _of the water for two st
10、reetsfor two streetsresult2 He found that the He found that the water_water_suggestionHe told people to_He told people to_result3He found _in He found _in another part of London.another part of London.suggestionHe suggested that the source of all water He suggested that the source of all water suppl
11、ies _and supplies _and _be found._be found.sourcesourcecame from the river.came from the river.remove the handleremove the handlefrom the water pump.from the water pump.two other deathstwo other deathsConclusion:polluted water carried the disease.Conclusion:polluted water carried the disease.be exam
12、inedbe examinednew methodsnew methodsHow to prove a new idea?Put them into the right How to prove a new idea?Put them into the right order.order.Find a problem Make up a question Think of a method Collect results Analyze the results Repeat if necessary Draw a conclusion Draw a conclusion Think of a
13、method Collect results Make up a question Find a problem Analyze the results Repeat if necessaryScientific Report by John SnowThe problemTwo theories Idea 1:Idea 2:people absorbed the disease_.The method The resultsIdea 1 or 2?why?The conclusionNo body knew_.the cause of the serious disease of chole
14、ra _ that attacked victims_from the text cholera attack to test theories.Try to prove which method was correct.He found the cause of cholera was_._.Because the data showed a connection with the water.John Snow was able to _ once its cause was known.Strange cloud in the airwith their mealsCollect dat
15、athe polluted waterdefeat choleraIdea 2 John Snow was a _ doctor 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
16、 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 _.well-known19thcausebrokemarkedpumpsourceexamineddealingdefeatedSummary:defeat/controlDiscu
17、ssion:1).What should you do if youre traveling to a country that has a cholera outbreak according to Snows theory?.Eat cooked food while it is still hot.Boil water thoroughly(完全完全)before drinking.Wash hands with soap and water before preparing food and eating.Avoid eating raw food,especially seafood.What does“king”mean?Powerful,hard to cure.2.)What spirit can we find in John Snow?As a student,what should we learn from him?Careful,kind,brave,responsible,devoted to his career
