【正文】 人教版高中英語必修5教案Unit 1 Great scientistsPeriod 1 Warming up and readingLearning aims:1. To help students learn to describe people2. To help students learn to read a narration about John Snow3. To help students better understand “Great scientists”Important Points:To help students learn to read a narration about John SnowDifficult Points:To help students learn to describe peopleTeaching Procedures:Ⅰ. Warming upStep I Lead inTalk about scientist.T: Hi, morning, class. Nice to see you on this special day, the day when you bee a senior two grader. I am happy to be with you helping you with your English. Today we are to read about a certain scientist. But first let’s define the word “scientist”. What is a scientist?A scientist is a person who works in science, trying to understand how the universe or other things work.Scientists can work in different areas of science. Here are some examples: Those that study physics are physicists. Those that study chemistry are chemists. Those that study biology are biologists.Step II Brainstorming Ask the students to try the quiz and find out who knows the most.T: There are some great scientific achievements that have changed the world. Can you name some of them? What kind of role do they play in the field of science? Do these achievements have anything in mon? Match the inventions with their inventors.II. PrereadingGet the students to discuss the questions on page 1 with their partners. Then ask the students to report their work. Encourage the students to express their different opinions. 1. What do you know about infectious diseases?2. What do you know about cholera?3. Do you know how to prove a new idea in scientific research?III. ReadingStep I Prereading1. Do you know John Snow?2. Do you know what kind of disease is cholera?Let’s get to know how Dr. John Snow defeated “King Cholera” in 1854 in London in this reading passage: Step II Skimming Read the passage and answer the questions.1. Who defeats “King Cholera“? (John Snow)2. What happened in 1854? (Cholera outbreak hit London.)3. How many people died in 10 days? (500)4. Why is there no death at No. 20 and 21 Broad Street as well as at No. 8 and 9 Cambridge Street? (These families had not drunk the water from the Broad Street pump.) (Optional)Skim the passage and find the information to plete the form below.WhoWhenWhatHowResultJohn Snow1854helping ordinary people exposed to choleraExamining the source of all water supplies and finding new methods of dealing with polluted waster“King Cholera” defeatedStep III ScanningRead the passage and number these events in the order that they happened. 2 John Snow began to test two theories. 1 An outbreak of cholera hit London in 1854. 4 John Snow marked the deaths on a map. 7 He announced that the water carried the disease. 3 John Snow investigated two streets where the outbreak was very severe. 8 King Cholera was defeated. 5 He found that most of the deaths were near a water pump. 6 He had the handle removed from the water pump.Step IV Main idea and correct stageRead the passage and put the correct stages into the reading about research into a disease.John Snow Defeats “King Cholera”ParagraphStagesGeneral ideas1Find a problem:What cause the cholera?The causes of cholera2Make up a question:Which is right?The correct or possible theory3Think of a method:Test two theoryCollect data on where people were ill and died and where they got their water4Collect results:Mark the deathPlot information on a map to find out where people died or did not die5Analyze the results:Find the resource of the waterLook into the water to see if that is the cause of the illness6Find supporting evidenceFind other evidences to confirm his conclusion7Draw a conclusionThe polluted dirty source of drinking water was to blame for the cause of the London cholera Step V Group discussionAnswer the questions (Finish exercise 2 on Page 3)1. John Snow believed Idea 2 was right. How did he finally prove it? (John Snow finally proved his idea because he found an outbreak that was clearly related to cholera, collected information and was able to tie cases outside the area to the polluted water.)2. Do you think John Snow would have solved this problem without the map? (No. The map helped John Snow organize his ideas. He was able to identify those households that had had many deaths and check their waterdrinking habits. He identified those houses that had had no deaths and surveyed their drinking habits. The evidence clearly pointed to the polluted water being the cause.)3. Cholera is a 19th century disease. What disease do you think is similar to cholera today? (Two diseases, which are similar today, are SARS and AIDS because they are both serious, have an unknown cause and need public health care to solve them.)Step VI SummaryUsing the stages for scientific research and write a summary.Period 2amp。3 Language focusLearning aims: To help students learn to use some important words and expressionsImportant Points: To help students learn to remember some important words and expr