(课件网) Unit 1 Science and scientists Reading and Thinking By the end of this period, you will be able to: find out the stages of scientific research in this passage; learn about John Snow’s research process and analyze John Snow’s characters； express your idea on the given topic through creative thinking; analyze the structure of Problem-Solution pattern. Pre-reading Discuss the following stages of scientific research in groups. What order would you put them in ___ analyse the results ___ ask a question ___ draw a conclusion ___ collect data ___ find a problem ___ find supporting evidence ___ think of a method ① ③ ④ ⑤ ⑥ ② ⑦ Who What What can we know from the title In the early 19th century, an infectious disease hit Europe. Activity 1 Fast-reading for main ideas 1．What’s the main idea of the passage A．How John Snow found the cause of cholera and defeated it. B．The cause of cholera was polluted water. C．The source of all drinking water should be examined. D．John Snow was a well-known doctor in London. While-reading √ 2．Read the whole passage quickly and match the main idea with each paragraph. Para.1 A．Snow began his study by marking on a map. Para.2 B．John Snow decided to prove the second theory. Para.3 C．Snow’s contributions. Para.4 D．John Snow desired to defeat cholera. Para.5 E．The truth of the infection of cholera. Activity 2 Careful-reading for details Ⅰ.Read para.1 quickly and fill in the mind map. Cholera 1. What？ It used to be _____ in the world，because it causes _____. 2. When？ _____. 3. Where？ _____. 4. What results？ _____. one of the most feared diseases severe diarrhoea，dehydration，and even death In the early 19th century Europe Millions of people died from the disease Ⅱ. Read para.2 carefully and finish the following exercises. 1．Find out the two theories. The first theory (1) caused the disease. The second theory Cholera was caused by an infection from (2) . Bad air germs in food or water 2.Which of the following theories did John Snow believe A．A cloud of dangerous gas would float around until it found its victims. B．People absorbed cholera germs into their bodies with their meals. C．People got infected with cholera because of polluted air. D．People suffered from cholera because they were not clean. √ Ⅲ. Read para.3 carefully and finish the exercises. Multiple deaths happened here. No death happened here. Public house Conclusion： The pump water carried cholera germs. Clue 1: They drunk the water from the pump. Clue 2: They drunk free beer from the Public house. Water pump Clue 3: She had the water from the pump delivered to her house every day. A woman and her daughter died of cholera after moving away from Broad Street. Match the following headers with the letters from the chart above. Write A-E in the blanks. 1. conclusion 2. evidence 3. process 4. solution 5. theories A A It was believed that cholera was caused by bad air or ... ...
