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1、He put forward a theory about black holes.Stephen Harking第1頁/共18頁He has made a famous kite experiment.He learned a lot from it and invented lightning rod (避雷針避雷針).).Benjamin FranklinNever leave that until tomorrow, which you can do today.今日事今日事, ,今日畢。今日畢。第2頁/共18頁Who is he?Who is he?He is called the

2、greatest scientist in the 20th century.He is famous for the Theoryof Relativity.Albert Einstein第3頁/共18頁Thomas Alva EdisonGenius is one percent inspiration and ninety-nine percent perspiration.天才就是百分之九十九的汗水加上天才就是百分之九十九的汗水加上百分之一的靈感。百分之一的靈感。Who invented the way of giving electricity to everybody in lar

3、ge cities?第4頁/共18頁The Inventions of Thomas Edison Phonograph (留聲機)Lightbulb (電燈泡)Motion Pictures (電影)第5頁/共18頁draw a conclusionthink of a methodcollect resultsmake a questionfind a problemanalyse the resultsfind supporting evidencefind a problemmake a questionthink of a methodcollect resultsanalyse t

4、he resultsdraw a conclusionHow to prove a new idea in scientific research?find supporting evidence第6頁/共18頁What infectious diseases do you know about?第7頁/共18頁What other infectious diseases do you know?For example: When you eat some food that is not freshYou may feelMaybe you have got _.Cholera第8頁/共18

5、頁What is Cholera? Cholera infects peoples intestines(腸), causing diarrhea(腹瀉), vomiting(嘔吐) and leg cramps(小腿抽筋). 第9頁/共18頁Reading John Snow defeats “king cholera”第10頁/共18頁Whats 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. Th

6、e 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 .Fast reading第11頁/共18頁What is the problem?Cholera was the deadly disease of its day. Neither its cause nor its cure was understood.Whats the cause of cholera?第

7、12頁/共18頁Make a question: two theories 1. Cholera multiplied in the air. A cloud of dangerous gas floated around until it found its victims.2. People absorbed it with their meals.第13頁/共18頁Collect and analyze the results.Broad StreetMany deaths happened here.No death happened here.The water from the p

8、ump was to blame.Public house第14頁/共18頁The water was from the riverwhich had been polluted bythe dirty water from London.Where did the water come from? 第15頁/共18頁Find supporting evidence: What extra evidence did he find? A woman and her daughter who lived far away but drank the water also died.Draw a conclusion with certaintyThe polluted water carried the virus.第16頁/共18頁The passage tells us that_ John Snow foundout the cause of cholera which was a deadly disease in London in the 19th century. With his great effort, the disease was finally defeated. 第17頁/共18頁感謝您的觀看。第18頁/共18頁