great scientists热身和阅读第一单元.ppt

Do you know how to prove a new idea　in scientific research? seven stages 发现问题 提出假设 思考方法 收集资料 分析结果 寻找证据 得出结论 THINK WORK FIND Do scientific research (The process) Find a problem Make a question Think of a method Collect results Analyse the results Find supporting evidence Draw a conclusion SOLVE … ? John Snow defeats “King cholera霍乱王” What is Cholera? It is a kind of terrible disease caused by drinking dirty water and it caused a lot of deaths in the old times and it was very difficult to defeat. It begins in the stomach and a severe case can lead to death without immediate treatment. And the victims died very quickly from a loss of liquid after severe vomiting(呕吐) and diarrhoea(腹泻). Do you know what was this map used for in 1854? Task 1:Skim and Scan Who defeats “King Cholera“? What happened in 1854? How many people died in 10 days? Why is there no death at No. 20 and 21 Broad Street as well as at No. 8 and 9 Cambridge Street? John Snow Cholera outbreak hit London. 500 These families had not drunk the water from the Broad Street pump. Task 2 detailed reading Read and answer: Para.1 John Snow was an doctor in London who Queen Victoria as her personal . He thought about helping ordinary people to cholera. Though the cause and the of it were unknown, he wanted to face the and solve the problem. expert attended physician exposed cure challenge Paragraph 2 make up a question: Which theory to believe in? Cholera multiplied in the air without reason. A cloud of dangerous gas would float around until it found its victims. People absorbed it with their meals. John Snow finally proved the theory he believed by ________. A. gathering information with the help of a map B. looking into the source of the water for Broad Street and Cambridge Street C. separating those who suffered cholera from those who didn’t D. both A and B E. both A and