必修五Unit1热身和阅读.ppt

Archimedes (287—212 BC) Give me a place to stand on, and I can move the earth. ----Archimedes Charlie Darwin(1808-1882) Gregor MendelCzech (1822—1884) Gregor Mendel. The father of genetic. He grew pea plants and developed ideas on inherited characteristics. Between 1856—1863 he grew 28,000 pea plants. He examined seven kinds of seed and plant characteristics and developed some laws of inheritance(遗传). Sir Humphry Davy(1778—1829) John Snow British ( 1813~ 1858) a legendary(传奇的) figure in the history of public health, epidemiology [epi,di:mi?l?d?i] （流行病学） and anesthesiology（麻醉学） Do you know how to prove a new idea　in scientific research? seven stages 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 Task 2 Read and answer: Para.1 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 C Paragraph 34 Paragraph 5 Paragraph 6 What ’s the extra evidence? Paragraph 7 What are John Snow’s suggestions? 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 . Do you know what was this map used for in 1854? Task 3 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