高中英语人教版 (2019)选择性必修 第二册Unit 1 Science and Scientists教学设计及反思

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2019新人教高中英语选择性必修二Unit 1 Science and ScientistsReading and Thinking公开课教案Teaching aims:   Enable students to figure out the structure of the passage by analyzing the main idea of each paragraph.   Identify the process of scientific research and learn about the characteristics of great scientists.   Express students’ opinions on how to defeat cholera and improve their ability of asking questions.Teaching key points:   Lead students to learn about the process of doing scientific research.   Help students analyse the discourse structure and language features.   Inspire students to form the ability of questioning.Teaching difficult points:   Instruct students to figure out the discourse structure and language features.   Lead students to express their opinions on the characteristics of great scientists.    Teaching procedures:StepⅠLead-inWatch and think.1.What is the video mainly about?2.Do you know who is the first man to defeat cholera? And how?Suggested answers:1.The video is about cholera including its spread,harm and how to defeat cholera.2.By reading the passage I know it’s John Snow who is the first man to defeat cholera. StepⅡ Pre-readingDiscuss 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 methodSuggested answers:find a problem→ask a question→think of a method→collect data→analyse the results→find supporting evidence→draw a conclusion StepⅢ While-reading1.Scan the passage and write down the key words of each paragraph.Paragraph 1:Paragraphs 2 & 3:Paragraph 4:Paragraph 5:2.Read Paragraph 1 and answer the questions.Cholera(1)What?____________________(2)When? Where?__________________________(3)What consequence?_________________________John Snow(1)Who?He never lost his desire to ____________once and for all. (2)What?A __________doctor who even attended to __________. Suggested answers:While-reading1.Paragraph 1:What?Who?Paragraphs 2 & 3:How?Paragraph 4:TruthParagraph 5:Results and significance2.Cholera(1)A disease which causes diarrhoea,dehydration,and even death.(2)In the early 19th century;In Europe.(3)Millions of people died.John Snow(1)destroy cholera　(2)famous;Queen Victoria3.Paragraphs 2 & 3Activity 1　Read Paragraph 2 and answer the questions.(1)How many theories were there about cholera’s spread?And what were they?(2)Which one did John Snow agree with?(3)How severe was the cholera outbreak in that two particular streets?Activity 2　Finish the following chart.StagesKey words or sentences(1)Marking on a map(2)House numbers 16,37,38,and 40;20 and 21 Broad Street;8 and 9 Cambridge StreetAnalyse the results(3)Find supporting evidence(4)(5)As a result of this evidence,John Snow was able to announce that the pump water carried cholera germs. Suggested answers:3.Activity 1(1)There were two theories.One theory was that bad air caused the disease.The other was that cholera was caused by an infection from germs in food or water.(2)He agreed that cholera was caused by an infection from germs in food or water.(3)More than 500 people died in 10 days.Activity 2(1)Find a problem(2)Collect data(3)There were multiple deaths near the water pump and some households had had no deaths.(4)A woman and her daughter had died and the woman liked the water from the pump so much that she had it delivered to her house every day.(5)Draw a conclusion4.Paragraph 4(1)What’s the main idea of Paragraph 4?(2)How can we prevent cholera?Suggested answers:(1)The truth was that the water from the Broad Street pump had been infected by waste.(2)We should drink pure or boiled water.5.Paragraph 5What’s the influence of Snow’s study on science?Suggested answers:He helped people know how to prevent cholera.He transformed the way scientists study diseases by using maps and statistics.Step Ⅳ　Post-readingPragmatic analysis1.What’s the writer’s purpose for writing the passage?2.To whom does the author write this passage?Suggested answers:1.To tell readers how John Snow defeated cholera and his influence on scientific research.2.To those who are interested in science and scientists.Critical thinking1.What kind of spirits and qualities are necessary to be a scientist?2.Discuss in groups.According to John Snow’s scientific research,please share your opinions on how to defeat cholera.Suggested answers:1.To be a scientist,one should have the following spirits and qualities:patience,intelligence,diligence,strong wills,ambition and so on.The greatness of scientists lies not only in their lasting efforts,but also their selfless contribution to a better satisfying world.2.The answers may vary.StepⅤSummaryWhen 1.　　　　　 outbreak of cholera hit Europe,millions of people died from the disease.A famous doctor 2.　　　　　　(name) John Snow never lost his desire 3.　　　　　　(destroy) cholera once and for all.Snow believed that cholera 4.　　　　　　(cause) by an infection from germs in food or water,but he needed proof.Snow began by 5.　　　　　　(mark) on a map the exact places 6.　　　　　　 all those who died had lived.Snow suspected that the water pump was 7.　　　　　　(blame).Accordingly,he had the handle of the pump 8.　　　　　　(remove) so that it could not be used.Snow is considered 9.　　　　　　 father of modern epidemiology. Suggested answers:1.an　2.named　3.to destroy　4.was caused  5.marking　6.where　7.to blame　8.removed　9.the