北师大版高二选修七教案：Unit 20 period 1.docx

the first period reading (i)teaching goals 教学目标1. target language目标语言a.重点词汇和短语 assist, latter, handy, download, update, stainless, worn, conflict, assess, click into, die of, in peace, carry out, be associated with, lead to, prevent from, get stuck in, make suggestionsb.重点句子some like to read fantasy stories and imagine what the world will be like in 10, 50 or even 1,000 years time. the seminar starts on friday and the experts will be discussing the endless possibilities of the future. by the year 2030, development in biochemistry and medical science will have made it theoretically possible for us to live for at least 150 years. by the middle of the century, computers that are millions of times smarter than us will have been developed. the ancient chinese are associated with many important inventions, some of which have changed the world, and many of which, we still use today. in the west magnetism was not discovered until the fifteenth century. 2. ability goals 能力目标 enable the students to talk about the scientific development, learn about the life of the future, understand ancient chinese inventions and think up creative ideas for the future life.3. learning ability goals 学能目标 a. enable the students learn to talk about the scientific development. b. inspire the students to be more creative in thinking.teaching important and difficult points教学重难点a. guide the students to talk about the scientific development.b. how to encourage the students to talk freely and actively on the life of the future.teaching methods教学方法talking, discussing, fast reading and careful reading.teaching aids教具准备a recorder, a computer and a projector.teaching procedures and ways教学过程与方式step i warm-up let the students talk about science and discuss some questions about it to get them interested in the unit.t: good morning/afternoon, boys and girls!s: good morning/afternoon, mr. /ms !t: with the rapid development of science, great changes have taken place in our life. many new objects related to science have appeared. they belong to different branches of science, such as biology, physics, information technology and astronomy. now please look at the five objects on page 19 and try to match these four branches of science with the numbered objects. who can tell the answers to the class?s: let me have a try. a radio telescope belongs to astronomy; an atom, physics; a microscope, biology; a microchip, information technology and dna, biology.t: very good. now please match the key words in exercise 2 with the four branches of science. ok, who knows which word or words belong to biology?s: i think just one word: bacteria.t: quite right. what about physics? s: i believe the following words belong to physics: black holes, energy, gravity, mass, radiation, radium and radioactive.t: which word or words are related to information technology?s: these words: artificial intelligence, data processing and search engine.t: that is to say, the left words: deep space, light year, universe and solar system belong to astronomy. who can add more words to the four branches of science? any volunteer?s: mould, biology; equation and light year, physics; online, information technology; galaxy, astronomy. t: who can think of any other areas of science, such as chemistry, algebra and geometry?s: medicine and meteorology.t: what else?s: engineering and geology.t: all of you are good. now please listen to four extracts and identify these different programs: educational, quiz, news and interview. ill play the tape twice. are you ready?s: yes!t: lets begin.after the students listen twice, check the answers together.t: now well continue to talk about science. work in pairs and discuss the questions about science on the screen. ill give you a few minutes.show the following on the screen. 1 how has science affected our lives in the last two hundred years? think about: communication, entertainment and recreation, housing, medicine, transport, war, work.2 which of the changes in our lives have not been beneficial? why?3 in what areas do you think we need to do more research?after the students discussion, let them report their work.t: ok, time is up. which pair can give us your answer to the first question?s: let me have a try. in the last two hundred years, communication has developed rapidly. it changed with the introduction of cell phones and the way we correspond went from writing letters to emailing .cell phones make the world smaller. no matter where you are and what you are doing, you can get in touch with your family and friends. it brings much convenience to people. with tv, mp3 and computers invented, people can entertain themselves alone at home instead of going out with friends. they can watch wonderful programmes on tv, play computer games and listen to music using mp3. peoples housing conditions have been improved. people live in various kinds of buildings with air conditioners or heating system. as to medicine, antibiotic and bacterin疫苗 have been developed, which can control some infectious disease传染病。now transport is becoming cleaner, faster and safer. new technology is being used to make sure that the cars, taxis, buses and trains we use do not pollute the air. the new maglev train, which is environmentally friendly and energy-saving, has been made. many people have had cars of their own. when it comes to work, it has been computerized and people work on the internet. people even dont have to go to workplaces, but they can finish more work easier. work efficiency has been raised. when we refer to war, we think of missile导弹和nuke核武器 nuclear weapons, which can destroy the earth instantly. t: both of you worked hard just now. what about the second one?s: we both think the changes of war have not been beneficial. because if the nuclear weapons are used freely, many people will die, the whole world will not be in peace and the whole mankind will not be harmonious.t: thats right. whod like to tell us something about the last one?s: in our opinion, we need to do more research in medicine. as we know, aids is an issue for everyone. aids as a disease is not only affecting minority groups gay men, drug users and prostitutes. the latest figures from the world health authority and unaids show that hiv infection is now the fastest-growing serious health condition in many countries around globe. apart from aids, there are other deadly diseases that are threatening people. it is hoped that a cure will be found as soon as possible. t: ok, so much for the discussion.step ii reading ask the students to read the text on page 20 and learn what the futurologists talk about the future. pre-readingget the students to get the general idea of text.t: when it comes to the future, nearly everyone has his or her dreams. we can tell different aspects about the future. now i will give you four titles: from the past to the future, the future business, tomorrows world and a perfect future. what do you think they mean? whod like to tell us something about the first title? any volunteer?s: let me have a try. i think the text should centre around what happened in the past and what will happen in the future. it should tell us the development of the society from the past to the future.t: all right. what about the second title?s: in my opinion, the text will tell us what will happen in the business in the future if the title “the future business” is chosen. t: good. who can tell us your opinion of the third title?s: me. the text titled “tomorrows world” will tell us what the world in the future will be like.t: wonderful. what do you think the title “a perfect future” means? s: i guess it will tell us peoples wonderful dreams which will be realized in the future. t: what you said just now sounds reasonable. now please read the text on page 20 quickly and choose the best one from the four titles for it. ill give you 3 minutes.after 3 minutes, check the answers with the whole class.the best title is “tomorrows world”. while-readingget the students to get the detailed information about the text.t: now i will give you a few minutes to read the text carefully and understand the details in it. then finish the exercises 2-4 on page 20. after a few minutes, check the answers.suggested answers to exercise 2:when?what are the predictions? 1. in the next few yearscomputers will become handier. shortly all of us are going to use our voices to give instructions to computers. we will be able to download any file or update our computers just by saying a few words.2. by the year 2015the clothing industry will have produced new type of material that will remain stainless no matter what you spill on them. red wine stains will no longer ruin clothes. garments will also be so strong that they will never get old and worn.3. by the year 2025no one will die of starvation because there will be food for everyone. no one will have to live on welfare as everyone will have jobs and discrimination will be a part of the past. there will therefore no longer be any conflict and people will be able to live together in peace and equality.4. by the year 2030development in biochemistry and medical science will have made it theoretically possible for us to live for at least 150 years. tiny, insect-like robots may be sent around the cells of our bodies to assess our health and carry out repairs to keep us healthy.5. by the middle of the centurycomputers that are millions of times smarter than us will have been developed. we will be linking our brains to these computers and a huge database. a new type of electronic human might have developed!6. by the end of the centurywe will have discovered other places in our solar system suitable for living and we will have discovered ways to go further into space.t: right. now that we have learned what the predictions are. please finish exercise 4. ill ask some of you to report your answers. which of the predictions in exercise 2 will happen soon? we can see the evidence now.s: i think the first and the third predictions will happen soon.t: which of the predictions do you think will probably happen?s: in my opinion, the second prediction will probably happen.t: which of the predictions do you think will happen in your lifetime? there is a chance they will happen.s: i guess and the fourth predictions will happen in my lifetime.t: which will happen in your lifetime? but there is a small chance that they will happen.s: i believe there is a small chance that the fifth and the sixth predictions will happen. t: do you know why the writer is interested in futurology?s: because the writer loves talking about the future. he has always wondered about the future. maybe he likes to imagine something, wants to know what the world will be like in the future and can plan the future of the world for a living.t: right. post-reading t: now work with your partner and tell the other which of the predictions you would like or not like to come true? why? then after a few minutes, ill ask some of you to tell your opinion to the whole class.suggested answers to exercise 5:s: i hope computers will become handier and that we are going to use our voices to give instructions to computers. if so, it is more convenient and it is much easier for everyone to use computers anytime, especially for old people. they wont feel it difficult to use computers and computers will be more popular.s: id like the clothing industry to produce new types of material that will remain stainless no matter what you spill on them. we wont be worried that some stains will ruin our clothes any longer, especially the expensive clothes. and children will play more joyful and wont be scolded, even punished for dirtying their clothes. s: i will be happy if we can discover other places in our solar system suitable for living and ways to go further into space. we can communicate with aliens and travel the whole space to have a different experience. explanation play the tape for the students. ask them to underline the difficult phrases and sentences while listening. after the students listen to the tape, deal with some language points.t: do you have any difficulties with the text?s: could you please explain the sentence to us: by the year 2030, development in biochemistry and medical science will have made it theoretically possible for us to live for at least 150 years? i cant analyze the sentence structure and i dont know why “will have done” is used in the sentence.t: first, lets analyze the sentence structure. in the sentence, “development” is the subject, “will have made” is the predicate, “it” is an empty object, “possible” is the object complement and “for us to live for at least 150 years” is the real object. that is to say, “it” refers to “for us to live for at least 150 years”. second, we should pay attention to the adverbial for time “by the year 2030”. generally speaking, we should use the perfect tense with the preposition phrase “by + time”. if “by” is followed by the time indicating the past, the past perfect tense should be used and if it is followed by the time for the future, the future perfect tense should be used. in the next period, well learn the grammar about it and ill explain more about the tense. do you understand?s: yes. thank you.t: do you have any other questions?s: no.t: now ill show the following phrases on the screen. try to understand them better.show the following on the screen: click into, die of, in peace, carry outstep iii culture cornerget the students to read the passage in culture corner and try to answer the questions about it. t: as we know, china is a great country with a long history and many important things were invented by ancient chinese. they had a great effect on the whole world and many of the inventions are still used today. do you know the four great inventions that changed the world?ss: yes.t: what are they?ss: paper making, printing, gunpowder and the compass.t: quite right. lets read a passage about them and you can refer to the notes. after reading it, please try to answer the questions on page 30.suggested answers to the questions:1. from bamboo fiber.2. because of the invention of paper, the chinese were one of the first nations to start producing historical records, maps and literature.3. a chinese craftsman called bi sheng.4. this invention made it much quicker and easier to reproduce written work and led to the first ever mass-production of books and literature. books became more widely available to the public.5. it was principally used in wars and made something explode. for example, rockets carrying gunpowder could be launched at enemy soldiers from a bamboo tube.6. they made the f