课件47张PPT。Unit 1 Great Scientists (New Words)engineSteam
enginepumppubhandlegermconstruction Nicolaus Copernicusmovementgod(God)loopspinexamineattendvaluablecontributeWARMING UP1. Can you name some famous scientists?In your opinion, what qualities
should a scientist have ?Isaac NewtonAlbert EinsteinStephen HawkingDo you know these great scientists and their main achievement?Zhang HengThe earliest instrument
of telling earthquakesThe first steam engineLeonardo da Vinci遗传学
电
浮力定理
镭
进化论
画家
蒸汽机
矿工安全灯
黑洞理论
地动仪
阿基米德 Archimedes
达尔文 Charles Darwin
纽科文 Thomas Newcomen
孟德尔Gregor Mendel
居里夫人Marie Curie
爱迪生Thomas Edison
达芬奇Leonardo da Vinci
汉弗来.戴维爵士Sir Humphry Davy
张衡Zhang Heng
斯蒂芬.霍金 Stephen HawkingAccording to this form,try the quiz on P1.In your opinion, what qualities
should a scientist have ? common characteristicscautiouspersuasivestrict(be strict with
sb)positiveCo-operativecreativebright(brightness)enthusiastic1.What do you know about infectious diseases?2. What do you know about cholera?Pre-readingAIDSBIRD FLUSARSA brief introduction of cholera
Broad StreetJohn Snow
( 1813~ 1858)
Englishman water pumpcholera______ the cholera _____ the dirty waterLinktovirusinfectious(infect)Bacteria of choleraDo you know how to prove a new idea in scientific research?
Discuss in small groups the stages in examining a new scientific idea. What order would you put them in? Find a problemThink of a methodMake up a questionAnalyse the resultsRepeat if necessaryCollect resultsDraw a conclusionReadingSkimming
What’s the main idea of the passage?
John Snow was a well-known doctor in London.
The cause of Cholera was polluted water.
The source of all drinking water should be examined.
How did John Snow collect, analyze data and find the cause of the disease and solved it .2. What are the two theories explaining how cholera killed people?
3. What helps John Snow find the clue about the cause of the disease?
4. When was John Snow able to announce with certainty that polluted water carried disease?Para 2A map of London After he found two deaths in another part of London that were liked to the Broad Street outbreak.Find out the main idea (or topic sentence) of each paragraph:John Snow wanted to use his knowledge to solve cholera.He got interested in two theories explaining…He needed to prove the second theory was correct.He found out that dirty water was the
cause of choleraPara. 1Para. 2Para. 3Para. 4Para. 5Para. 6Polluted water carried the diseaseFinally “King Cholera” was defeated Scanning and fill in the chart on Page 3.Exercise 1The problem: Nobody know the cause of the serious disease of cholera
Idea 1: strange cloud in the air that attack victims.
Idea 2: people absorbed the disease with their meals.
The method: Collect data from the next cholera attack to test theories. Try to prove which method was correct.The results: He found the cause of cholera was the polluted water.
Idea 1 or 2? Why ?
Idea 2 because the data showed a connection with the water.
The conclusion: John Snow able to defeat cholera once its cause was known.Read the passage again and answer these questions.1.Cholera was a 19th century disease. What disease do you think is similar to cholera today?Two diseases ,which are similar to cholera today are SARS and AIDS because they are both very serious ,have an unknown cause and need public health care to show them.2. John Snow believed Idea 2 was right. How did he finally prove it?John Snow finally proved his idea because he found an outbreak that was clearly related to cholera collected information and was able to tie cases outside the area to the polluted water.3. Do you think John Snow would have solved this problem without the map? Give a reason.No.The map helped John Snow organise his ideas. He was able to identify those households that had had many deaths and checked their water-drinking habits. He identified those houses that had had no deaths and surveyed their drinking habits.The evidence clearly pointed to the polluted water being the cause. As the disease spread quickly, ______ _______________________He marked on a map where all the dead people had lived, ___________________and found out _________________ was the cause. Then he suggested that the source of all drinking water______________ How did John Snow finally defeat Cholera?EXERCISEHOMEWORKEx1,P4 (discovering useful words and expressions)
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