必修5Unit 1 Great Scientists 阅读课_0.doc

必修5Unit 1 Great Scientists 阅读课 第一步 作业检查 1. Ask two or three students to give a talk on their chosen scientists. 2. Ask some students their opinions about the two questions in “Pre-reading”. 第二步 导入新课 1. Show students a video about SARS and let them have some knowledge of the effect of infectious diseases on their life. Tell them the effect of cholera in the nineteenth century London was even more devastating. 2. Ask students who defeated this terrible cholera. John Snow 第三步 预测文章内容 1. Ask students to read the title “John Snow Defeats King Cholera” and look at the pictures, then guess what the passage may be about. 2. Ask one or two students to give their opinions. 第四步 阅读文章 1. Let students skim the text and find out the main idea of the passage. What’s 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. The source of all drinking water should be examined. D. How John Snow collected, analyzed data to find the cause of the disease and solved it. Key: D 2. Let students read the text again and do the true or false questions. ① Cholera was the most deadly disease of its day. ② John Snow attended Queen Elizabeth I to ease the birth of her babies. ③ John Snow got no interest in two theories explaining how cholera killed people. ④ In 1854, the cholera outbreak was so severe that 500 people had died in 10 days. ⑤ John Snow found that the polluted water was the cause of the cholera. Keys: ① ⑤T F F F T 3. Let students have an intensive reading and finish the form. Paragraph Stages in an experiment Example in this investigation 1 ? What causes cholera? 2 ? ? 3 ? 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. 4 ? ? 5 ? Find other evidence to confirm the conclusion. 6 ? ? Answers： Paragraph Stages in an experiment Example in this investigation 1 [1]?[2]?下一页