新人教高中英语必修5Unit1 Great scientists(ppt).ppt

Unit 1 Great scientists 2021/8/8 星期日1Who are they?Marie Curie Einstein Zu Chongzhi Charles Darwin Newton Archimedes Stephen Hawking Zhang Heng 2021/8/8 星期日2Task 1.Discuss the following question with your partner:Do you know the names of some famous scientists?What are they famous for?Then try the quiz on page 1.2021/8/8 星期日3John Snow(1813-1858)was born and worked as a doctor in Great Britain.He was originally an anesthetist,which means that he put people to sleep during operations.He also began to experiment using the same drugs to help women when they had babies.That is why he became the doctor for Queen Victoria at the births of her many children.2021/8/8 星期日4At that time he lived,cholera was the most frightening disease.There were four outbreaks of cholera in the 1830s and 1840s,which killed many thousands of people in the industrial cities of England.In 1853 there were outbreaks in Newcastle and Gates head.In London more than ten thousand people died.Then in 1854 on August 31st“the most terrible outbreak of cholera which ever occurred in the kingdom”began.It was so violent and sudden that 127 people around Broad Street died in the first three days.John Snow found the cause of the disease and he was the first epidemiologist(流行病学家)or community health doctor.2021/8/8 星期日5Task 2.Ss discuss and answer the following questions.1.What do you know about infectious diseases?What do you know about cholera?2.Do 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?Draw a conclusion Find a problem Think of a method Analyse the results Collect results Repeat if necessaryMake up a question 12345672021/8/8 星期日6Task 3:First reading:Ss read the text and tell whether the statements are true or false.(T/F)1.As a doctor,being able to attend Queen Victoria was an honourable thing at that time.2.Although cholera couldnt be cured,its cause was known to people in the days of John Snow.3.John Snow doubted the two theories explaining how cholera killed people,so he did investigation to test them.4.The results wouldnt have been so clear without the map John Snow had drawn.5.The polluted dirty water from the river was to blame for the disease.TFFTT2021/8/8 星期日7Task 4.Ss read each paragraph and finish the following chart.Para.Stages in an experiment Example in this investigation 1234567Find a problem Make up a question Think of a method Collect results Analyse results Repeat if necessary Make a conclusion What causes cholera?Which theory is correct?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.Analyse the water to see if that is the cause of the illness.Find other evidence to confirm your conclusion.The water is to blame.The source of all drinking water should be examined so that it is safe.2021/8/8 星期日8Task 5.Third reading:Ss read again and fill in the chart.Scientific Report by John Snow The problem The cause Idea 1:Idea 2:The method The results Idea 1 or 2?Why?The conclusion Nobody knew the caused of the serious disease of cholera.strange cloud in the air that attacked victims people absorbed the disease with their meals Collect data from the next cholera attack to test theories.Try to prove which method was correct.He found the cause of cholera was the polluted water.Idea 2 because the data showed a connection with the water.John Snow was able to defeat cholera once its cause was known.2021/8/8 星期日9Task 5:Ss in groups and discuss:1.Cholera was a 19th century disease.What disease do you think is similar to cholera today?Why?2.John Snow believed Idea 2 was right.How did he finally prove it?3.What can you learn from this text?2021/8/8 星期日102021/8/8 星期日119、静夜四无邻，荒居旧业贫。2022/11/272022/11/27Sunday,November 27,202210、雨中黄叶树，灯下白头人。2022/11/272022/11/272022/11/2711/27/2022 11:28:01 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