高中英语 Unit 1　Great scientists Period 1） (1)优秀教案 新人教版必修5

用心 爱心 专心1 PeriodPeriod 2 2 ReadReadinging TheThe GeneralGeneral IdeaIdea ofof ThisThis PePeriodriod This is the second period of this unit This period focuses on the reading passage which is about John Snow and King Cholera At the beginning of the period the teacher can design some activities to draw the students attention to read In order to attract the students attention the teacher had better offer the students the opportunities to have a competition about some information about some scientists mentioned in the Warming up Then the teacher can make full use of the questions in the Pre reading This step is designed to make for preparing for understanding the passage Reading skills are very important for senior students For the first reading we intend to cultivate Ss skimming ability and scanning ability First ask the students to scan it and tick out what are mentioned in the passage Then let the students read fast to find out the main idea of each paragraph In order to stimulate Ss to take part in the class activity more actively the teacher can organize a group competition to see which group can finish the task fastest and best For the second reading the students are expected to know some details about the passage Later on the teacher will present some questions for the students to answer and at the same time they are asked to finish filling in the chart The third time is to read for further information This part is designed to get Ss into the habit of reading a passage as a whole that is to get the general idea Another purpose of this part is to ask Ss to pay attention to the details To develop Ss further u nderstanding ability the teacher can design some questions whose answers are beyond lines So the teacher will help them to read between the lines thus Ss can gradually get the ability to understand the implied meanings In this step the teacher asks Ss to read it again in order to make them think about the organization of the whole passage and this method can help them not only in their understanding this passage but also in writing a short passage To consolidate the content of the passage Ss are required to retell it according to the main idea In order to arouse the Ss interest the teacher can hold a competition between groups After the students understand the whole passage they are asked to have a topic discussion Teaching Important Points Have a good understanding of the text by doing the exercises Get the students to learn different reading skills especially gist reading and comprehending beyond lines Teaching Difficulties Know the meanings between lines and beyond lines Learn different reading skills for different reading purposes Teaching Aids Multi media classroom and other normal teaching tools Three Dimensional Teaching Aims Knowledge Aim Have a good understanding of the text through the exercises Ability Aims Grasp some reading skills Develop the ability to describe some famous scientists Emotional Aims 用心 爱心 专心2 Encourage the students to work hard at their lessons in order to devote themselves to science Teaching Procedure Step 1 Greeting T Hello my friends Ss Hello Miss Yang Step 2 Revision T Yesterday we talked a lot about great scientists Now I d like you to answer some questions to see how much you remember about them Let s come to a group competition If you know the answer you can just stand up If you get your answer right I ll give you ten marks Are you ready Listen carefully Which scientist discovered that objects in water are lifted up by a force that helps them float Any volunteer S Archimedes T Right Who wrote a book explaining how animals and plants developed as the environment changed S Charles Darwin T Yes Do you still remember the title of the book S On the Origin of Species T Very good Who invented the first steam engine S James Watt T You ve done a good job Who used peas to show how physical characteristics are passed from parents to their children S Gregor Mendel T Can you say something about him S OK His research gave birth to the science of genetics T Well done Who discovered radium S Madame Curie T Yes we know she is a great woman scientist We should remember what she said Life is not easy for any of us We must work and above all we must believe in ourselves We must believe that each one of us is able to do something well and that when we discover what this something is we must work hard at it until we succeed T Who invented the way of giving electricity to everybody in large cities S Faraday T You are right Who was the painter that studied dead bodies to improve his painting of people S Leonardo da Vinci T Yes Who invented a lamp to keep miners safe underground S Humphrey Davy T Who invented the earliest instrument to tell people where earthquakes happened S Zhang Heng T Do you know what he invented S He invented seismograph T Who put forward a theory about black holes S Stephen Hawking T He wrote a famous book What s the title of it 用心 爱心 专心3 S A Brief History of Time T All of you did a good job For the time being the first second group won the competition But there are a lot of chances for you to catch We will continue our competition later Step 3 New Words T Today we are going to read a new passage about another scientist named John Snow First let s come to new words first Here are some definitions of some of the words from this text Please work in pairs and match the words with their definitions A attend B control C handle D blame E absorb F announce G immediately H be linked to I in addition J expose 1 have control authority power over 2 part of a tool bucket drawer etc by which it may be held in the hand 3 take or suck in 4 at once or without delay 5 uncover leave uncovered or unprotected 6 as well besides 7 be joined with be connected with 8 wait on serve look after 9 fix on sb the responsibility for sth done or not done 10 make known Suggested answers B 1 C 2 E 3 G 4 J 5 I 6 H 7 A 8 D 9 F 10 Step 4 Pre reading T There are so many scientists that we can t count them But all the scientists must have their scientific attitude and scientific way to do scientific research Now open your books on Page 1 Look at the questions in Pre reading quickly and discuss them with your partner in two minutes Teacher gives the students two minutes to discuss After that the teacher asks them to answer the three questions T First let s talk about infectious diseases Can you name some Let s come to a group competition again If you get your answer right I ll give you ten marks Ss Bird flu SARS cholera T What do you know about cholera S Cholera was a 19th century disease S Cholera was spread by germs S It was the most deadly disease of its day S People who are infected with it will be easy to die S T Excellent Now let s come to Question 2 How can we prove a new idea in scientific research What order would you put them in Ss find a problem make up a question think of a method collect results analyse the results repeat if necessary draw a conclusion Step 5 Reading First reading Scanning T Here is another great scientist Maybe you are not familiar with him Look at his picture on Page 2 John Snow was the great scientist who defeated King Cholera Scan the passage and tick out what are mentioned in the passage I will give you two minutes 1 John Snow s wish 2 John Snow s attending Queen Victoria 3 two theories explaining the cause of Cholera 4 John Snow s examination of the source of the water 用心 爱心 专心4 5 evidence for the cause of Cholera 6 the source of all water supplies 7 the spread of Cholera by germs in polluted water Suggested answers 1 3 4 5 7 are mentioned in the passage Second reading Skimming to find out the main idea for each paragraph T Skim each paragraph and find out the main idea for each one When you want to find the main idea of each paragraph you especially pay attention to the first sentence and the last one which may help you find the main idea quickly I will give you three minutes to do it The teacher offers three minutes for the students to do it Later asks some students to answer Suggested answers Conclusion 6 Para theories testingof method The 53 Para cholera of cause theexplaining theoriesTwo 2 Para cholers and SnowJohn on tointroducti Brief 1 Para Third reading Detailed reading to answer questions T Now let s read the passage carefully to learn about more details Later I will let you answer some questions and fill in the chart Let s come to a group competition again If you get your answer right I ll give you twenty marks Scientific Report by John Snow The problem Idea 1The cause Idea 2 The method The results Idea 1 or 2 Why The conclusion 1 What problem existed in London at his time 2 How did cholera kill people 3 How did he prove the second theory was correct 4 What was the result after he looked into the cause of cholera 5 Which idea was right Why 6 What conclusion did he draw Suggested answers Scientific Report by John Snow The problemThousands of people died of cholera every time there was an outbreak Neither its cause nor its cure was understood Idea 1 Cholera multiplied in the air without reason The cause Idea 2 People absorbed this disease into their bodies with their meals The methodHe began to gather the information He marked on a map where all the dead people had lived and the map gave a valuable clue about the cause of the disease He looked into the source of the water The resultsPolluted water carried the disease People who drank the polluted water died of Cholera Idea 1 or 2 Why Idea 2 is correct He found two other deaths in another part of London that were linked to the polluted water With this extra evidence he was able to announce that polluted water carried the disease The conclusion King Cholera was defeated Fourth Reading Further understanding 用心 爱心 专心5 T From the passage we know that John Snow believed that Idea 2 was right How did he finally prove it If you get your answer right I ll give you thirty marks Ss John Snow believed in the second theory but needed to prove he was correct So when another outbreak hit London in 1854 and it spread quickly through the poor neighbourhoods he began to gather the information He determined to find out why He marked on a map where all the dead people had lived and the map gave a valuable clue about the cause of the disease He looked into the source of the water for Broad Street and Cambridge Street He had shown that cholera was spread by germs and not in a cloud of gas In addition he found two other deaths in another part of London that were linked to the Broad Street outbreak They died of cholera after drinking the polluted water With extra evidence he was able to announce that polluted water carried the disease Finally King Cholera was defeated T You really did a good job Do you think John Snow would have solved this problem without the map Why If you get your answer right I ll give you thirty marks S I think he would have solved the problem But he would spend more time in testing the two theories and it would be more difficult for him to look into the cause of cholera The teacher should give them about two minutes to discuss and join in the discussion at the same time After that the students will be asked to show their opinions to the whole class Step 6 Consolidation T In this period we have learned a lot about John Snow and King Cholera What have you learned from it I will give you one minute to prepare for it If your sentence is quite good I ll give you thirty marks After one minute S1 John Snow was a well known doctor in London S2 He attended Queen Victoria to ease the birth of her babies S3 He got interested in two theories explaining how cholera killed people S4 John Snow had shown that cholera was spread by germs and not in a cloud of gas S5 John Snow announced that polluted water carried the disease S6 T Your sentences are so wonderful and amazing I admire them very much Who would like to retell the whole passage to us If you can I ll give you fifty marks Ss Step 7 Topic discussion T Now let s come to our topic We know cholera was a 19th century disease What disease do you think is similar to cholera today Why If you show quite a good opinion I ll give you thirty marks But first I will give you two minutes to discuss it with your partner The teacher should give them about two minutes to discuss and join in the discussion at the same time After that the students will be asked to show their opinions to the whole class S Since a lot of people die of bird flu I think bird flu today is similar to cholera Now the cause of bird flu is not quite clear but scientists devote their lives to finding out the cause and the cure S In my opinion SARS is quite similar to cholera SARS is spread by germs in the air while cholera is spread by germs in the polluted water A lot of people have been dying of SARS Ss T This time the first second group won the competition Congratulations 用心 爱心 专心6 T I d like you to write a short passage about John Snow according to the passage The Design of the Writing on the Blackboard Unit 1 Great scientist Period 2 Reading Main idea of each part Conclusion 6 Para theories testingof method The 5 3Paras cholera of cause theexplaining theoriesTwo 2 Para cholera and SnowJohn on tointroducti Brief 1 Para Scientific Report by John Snow The problem Idea 1The cause Idea 2 The method The results Idea 1 or 2 Why The conclusion Research and Activities Use your imagination to write a short passage about what may happen in the future Imagine if you were to find out the causes of SARS how would you do and what methods would you use to test your theory You can imitate the structure of the reading passage but you must make full use of your imagination to write what is different from the cause of cholera Reference for Teaching WHO Cholera in Chad Could Spread to Sudan s Darfur The government of Chad is calling for international assistance to fight a cholera outbreak in the country The World Health Organization says it is concerned that the disease could spread to the Darfur region of western Sudan which is already struggling with his own humanitarian crisis due to violence The government of Chad says more than 2000 cases of cholera have been reported in the country and it expects that number to more than double by the end of the rainy season in September Although the majority of cases in Chad are being reported in the region surrounding the capital in the west But the WHO says it is deeply worried that it could spread to neighboring Sudan and the refugee camps sprawled across its troubled western region of Darfur An expert with the WHO Claire lise Chaignat says the disease is endemic to mainly poorer areas that do not have access to safe water supplies Another factor is also the refugees living in refugee camps where they are living in close communities with not enough water and no proper sanitation she said So that is also a high risk for the community So for example we are very much scared that now in the crisis in Darfur or in the eastern Chad there might be a cholera outbreak In case the germ occurs because the water and sanitation situation is so bad that it s really a real risk that we might have a cholera outbreak there Chad has been battling a potential locust scourge in the west and has received an influx of refugees in the east from the fighting taking place in the Darfur region The government is asking for nearly 200 000 in aid to try to curb the spread of cholera Cholera outbreaks are being reported throughout much of central and western Africa this year including Cameroon Sierra Leone Guinea and the Democratic Republic of Congo 用心 爱心 专心7 The disease spreads quickly in areas where water supplies are contaminated and causes dehydration within days It can lead to death if victims are untreated within a week Carrie Giardino VOA News Abidjan The strains of cholera bacteria prevalent in China make change and experts warn for possible outbreak In China s database of epidemic status a painting depicted with the three epidemic waves documented in figures the status of cholera epidemic in the past 40 years throughout the country Each time of fluctuations in the epidemic graph was related to the changes of cholera bacterial typing The latest data of monitoring showed that the dominating bacterial type of cholera epidemics had another change emerging with a unique epidemic bacterial ty