内蒙古人教新课标高中英语必修五Unit+1+Great+scientists+教案1 (1)

Unit 1 Great scientists 教案1（JOHN SNOW DEFEATS “KING CHOLEAR”<PART 1>）Teaching Goals1. Enable the Ss to familiar with some famous scientists and their contributions.2. Enable the Ss to learn how to organize a scientific research.3. Let the Ss learn the reading skill of getting the main idea of each para./ part & each passage.Difficult points1. How to grasp the main idea of each paragraph / part & each passage.2. How to help the Ss use what they’ve learnt to do first aid treatment for burns correctly.Teaching methods1. Skimming & scanning methods to make the Ss get a good understanding of the text.2. Discussion methods to make the Ss understand what they’ve learned in class.3. Pair work of group to get every student to take part in the teaching-and-learning activities.4. Competition and role-play method to arouse the Ss’ interest.Teaching processI. Warming upStep I Lead inTalk about scientist.T: Hi, morning, class. Nice to see you on this special day, the day when you become 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 studybiology are biologists.Step IIAsk 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 common? Match the inventions with their inventors below before you answer all these questions.1. Archimedes, Ancient Greek （287-212 BC）, a mathematician.2. Charles Darwin, Britain （1808-1882）. The name of the book is Origin of Species.3. Thomas Newcomen, British （1663-1729）, an inventor of steam engine.4. Gregor Mendel, Czech, a botanist and geneticist.5. Marie Curie, Polish and French, a chemist and physicist.6. Thomas Edison, American, an inventor.7. Leonardo da Vinci, Italian, an artist.8. Sir Humphry Davy, British, an inventor and chemist.9. Zhang Heng, ancient China, an inventor.10. Stepper Hawking, British, a physicist.II. Pre-readingGet 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 differentopinions.1. What do you know about infectious diseases?Infectious diseases can be spread to other people. They have an unknown cause and need public health care to solve them. People may be exposed to infectious disease, so many animals, such as bird flu, AIDS, SARS are infectious diseases. Infectious diseases are difficult to cure.2. What do you know about cholera?Cholera is the illness caused by a bacterium called Vibrio cholerae. It infects people’s intestines（肠）, causing diarrhea and leg cramps（抽筋）.The most common cause of cholera is by someone eating food or drinking water that has been contaminated（污染）with the bacteria.Cholera can be mild（不严重的）or even without immediate symptoms（症状）, but a severe case can lead to death without immediately treatment.3. Do you know how to prove a new idea in scientific research?Anybody might come out with a new idea. But how do we prove it in scientific research? There are seven stages in examining a new idea in scientific research. And they can be put in the following order. What order would you put the seven in? Just guess.Find a problem→ Make up a question→ Think of a method→ Collect results→Analyze the results→ Draw a conclusion→ Repeat if necessaryIII. ReadingStep I SkimmingRead 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.）Skim the passage and find the information to complete the form below.Who When What How ResultJohn Snow 1854 helping ordinary people exposed to cholera Examining the source of all water supplies and finding new methods of dealing with polluted water “King Cholera”defeatedStep II 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 III 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”Paragraph Stages General ideas1. Find a problem:What cause the cholera? The causes of cholera2. Make up a question:Which is right? The correct or possible theory3. Think of a method:Test two theory Collect data on where people were ill and died and where they got their water4. Collect results:Mark the death Plot information on a map to find out where people died or did not die 5. Analyze the results:Find the resource of the water Look into the water to see if that is the cause of theillness6. Find supporting evidence Find other evidences to confirm his conclusion7. Draw a conclusion The polluted dirty source of drinking water was to blame for the cause of the London choleraStep IV 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 areato 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 many deaths and check their water-drinking habits. He identified those houses that 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 V Using the stages for scientific research and write a summary.Sept VI Word Study1. (Pair work) Get Ss to learn the new words and phrases on p92 within 3 mins, by reading them aloud to each other to make sure that they can pronounce the words correctly---- Get Ss to read aloud the words in pairs by turns, e.g. 1 pairs read 4 words then go to next pair2. Practice Use the correct form of the words to fill in the blanks.Step VII. Homework1. Finish P4, Ex 1,2（on SB） Ex3 make sentences on exercise book (make one’s way to, make up one’s mind, make sure, make room for)2. Find out the phrases according to the Chinese (part 1 on the paper for language points)3. Retell the story John Snow Defeats “King Cholera” by following the 7 steps on p14. Read notes to Unit 1, p78-79, find out some difficult points while reading the text。