高中英语_Unit_20_Lesson_3_Scientific_Breakthroughs_课件_北师大版选修7
Reading Task:
In the 20th century, many amazing discoveries were made in medicine, communications and transport, let alone our knowledge of 1 .
Some pioneers Discoveries\ Inventions 2 Albert Einstein Theory of relativity Edwin Hubble Alexander Fleming Eckert and Mauchly Percy Spencer Without these different world. 10 5 we live in Penicillin The first computer 9 . like the one It showed time, mass and length 4 according to our experience of them. It proved that the universe was vastly than had previously been thought. It saved 7 . 8 of the 6 . . . Significance It showed how a small piece of mass could produce an unbelievable amount of 3 .
Alexander Fleming
John William Mauchly and J. Presper Eckert
The designer of ENIAC, the first commercial computer made in the United States.
The World First Computer
Percy Spencer, an American engineer and inventor, discovered microwaves.
Percy Spencer
Try to match the discoveries with how they were discovered?
1.The equation E=mc2
Neil Alden Armstrong was the first person to set foot on the Moon.
This is my personal one small step, it was a great step of mankind.
The first artificial satellite, Sputnik 1, was launched by the Soviet Union in 1957.
6. Fleming had been studying bacteria in his laboratory when the discovery happened. 7. There was a blue mould around the bacteria in the dish. 8. Fleming developed the process of making penicillin. 9. The first computer project failed to meet its original goal. 10. The first computer was extremely difficult to program. 11. The scientist who discovered microwaves invented microwave ovens. 12. Today it is possible to donate your heart to hospital when you die.
Edwin Hubble
Edwin Hubble was an American astronomer. His most important discovery was the expanding universe.
Hubble space telescope
Alexander Fleming, a Scottish biochemist, discovered Penicillin.
In the 20th century, many amazing discoveries were made in medicine, communications and transport, let alone our knowledge of 1. the world and space . Some Discoveries\ Significance pioneers Inventions It showed how a small piece 2. E=mc2 . of mass could produce an Albert unbelievable amount of Einstein 3. energy . Theory of It showed time, mass and relativity length 4. change according to our experience of them.
Para.7
Para. 8
Conclusion
The significance of these breakthroughs
Are these statement true or false according to the text or is there no information?
1. Einstein was at work when he thought of the equation “E=mc2”. 2. Einstein participated in the program that developed the nuclear bomb. 3. Einstein observed changes in time, size and mass. 4. Hubble studied the universe for over twenty years. 5. Hubble discovered that our galaxy is bigger than we thought it was.
Are these statement true or false according to the text or is there no information?
1. Einstein was at work when he thought of the equation “E=mc2”. F 2. Einstein participated in the program that developed the nuclear bomb. NI 3. Einstein observed changes in time, size and mass. T 4. Hubble studied the universe for over twenty years. NI 5. Hubble discovered that our galaxy is bigger than we thought it was. T
Simple outline
introduction
A brief introduction of scientific breakthroughs in the 20th century
ቤተ መጻሕፍቲ ባይዱPara.1 Para . 1
Para.2 Para.3 Para.4 Para.5 Para.6
Body
Some great pioneers of science and their inventions or discoveries
Unit 20 Lesson 3
Scientific
Breakthroughs
Some discoveries or inventions in the 20th century:
Means of transport:
Wright Brothers
The change in communication:
It saved 7. millions of lives .
It was produced to increase the 8. accuracy of the US Navy’s missiles. Percy 9. Microwaves . It helps us prepare meals in Spencer minutes. Without these 10. breakthroughs in science and technology, we would have had a completely different world.
Albert Einstein was considered the greatest scientist of the 20th century.
Albert Einstein
His greatest discovery is the creation of his famous
Theory of Relativity.
It was produced to increase the US Navy’s missiles. It helps us prepare meals in minutes.
in science and technology, we would have had a completely
Reading Task:
2.Penicillin 3.The first computer 4.Other galaxies 5. Microwave a)Scientists worked together as a team b)There was a lucky accident c)A scientist did research for many years d)A scientist was inspired e) There was a mistake
安徽省滁州二中高二英语《Unit 20 New Frontiers Lesson 3 Scientific Breakthroughs》教案
安徽省滁州二中高二英语《Unit 20 New Frontiers Lesson 3Scientific Breakthroughs》教案Teaching aims1.words and phrases：nguage points in the text3.reading strategies4.exercises about text5.vocabulary:phrasal verbs and compound wordsTeaching time： Two periods(两课时连堂)Teaching processStep 1 RevisionReview the new words of lesson 2 and have a dictionStep 2 learn the new words of lesson 31.ask some students to read the new words first and correct their pronunciation2.play the tape and have them read after the tape3.give them a few minutes to read the new words freely, tell them if they can’t read the words, encourage them to ask the teacher .step 3 reading1.discuss the pictures and talk about the scientists’ major discoveries.2.do exercise 2 by themselves.3.let the students look at Reading Strategies and check their answers to exercise 1 and 2.4.play the tape twice, and do exercise 4.step 4 language points1.in a dilemma处于困境2.have sth on your hands手头有某事待处理3. make a breakthrough/discovery 作出突破、发现4.not to mention更不用说5. range from…to…在…范围内变化6.replace…with…用…代替…7. donate sth. to sb./sth. (for sb.) 捐赠给(为某人捐...) n. make a donation to 向...捐助8. correspond with sb.与某人通信 correspond with sth. 与...一致 correspond to 相当于9. meanwhile=in the meanwhile/meantime=at the same time与此同时,在此期间 adv.10. single out挑出、选出 pick out认真挑选 sort out使整齐、整理;挑出11. not even 甚至连…都不 12. ex-lawyer n.前律师 outspoken adj.直言的high-powered adj.功率大的 far-reaching adj.影响深远的 double-check v.复核/复查mass-produce v.大批量生产13. be previously thought to be... 之前被认为是14. cn.用单数 outcome of …的结果 results(比赛、考试、年度)结果,成绩,业绩15.cure sb. of sth. 治愈某人的疾病；矫正某人不良的行为a cure for 治疗.....的方法 P25treat sb. for sth.“为某人医治，治疗”。
北师大版高中英语选修7Unit 20 Lesson 3 Scientific Breakthroughs教案1 北师大版 选修7
Unit 20 Lesson 3 Scientific BreakthroughsTeaching aims1.words and phrases：nguage points in the text3.reading strategies4.exercises about text5.vocabulary:phrasal verbs and compound wordsTeaching timeTwo periods(两课时连堂)Teaching processStep 1 RevisionReview the new words of lesson 2 and have a dictionStep 2 learn the new words of lesson 31.ask some students to read the new words first and correct their pronunciation2.play the tape and have them read after the tape3.give them a few m inutes to read the new words freely, tell them if they can’t read the words, encourage them to ask the teacher .step 3 reading1.discuss the pictures and talk about the scientists’ major discoveries.2.do exercise 2 by themselves.3.let the students look at Reading Strategies and check their answers to exercise 1 and 2.4.play the tape twice, and do exercise 4.step 4 language points1.think over v.仔细考虑, 重新考虑2.be aware of v.知道, 意识到eg: Everybody is aware of the importance of study.每个人都意识到了学习的重要性。
Unit20Lesson3ScientificBreakthroughs短语详解
【词汇讲解】Unit 20Lesson 3 Scientific Breakthroughs短语详解考点1 according to (p24)【要点提示】据……所说；根据；按照；取决于；据……所载According to George, she’s a great player.据乔治所说，她是一个优秀的运动员。
According to our records payment of $56 is now overdue.根据我们的记录，有56美元的款项逾期未付。
We are paid according to how much work we do.我们的工资随工作量而定。
Please arrange the books according to size.请按大小将书分类。
We will go or we won't, according to circumstances.我们或去或不去，都将视情况而定。
According to her, grandfather called at noon.据她说,祖父在中午打来过电话。
【思维拓展】according as“视乎”，有depending及according to whether的意味，是连词词组，其后接从句。
We will play golf or stay home according as the weather is good or bad.我们是去打高尔夫球还是呆在家里取决于天气是好是坏。
You will be able to do it according as you have the courage.只要你有勇气，你就能做这件事。
【连线高考】①According to statistics, a man is more than twice as likely to die of skin cancer _________ a woman. [2009江西]A. thanB. suchC. soD. as【答案与解析】 D 本题考查比较级的结构，as …as , 注意句中的more than 只是修饰twice。
北师大版高中英语选修7Unit 20 Lesson 3 Scientific Breakthroughs 课件 课件ppt
Theory of relativity
It showed time, mass and
length 4. change according
to our experience of them.
Reading Task:
Edwin Hubble
It proved that the universe
5.New galaxies like was vastly 6. larger than
4. Hubble studied the universe for over twenty years.
5. Hubble discovered that our galaxy is bigger than we thought it was.
6. Fleming had been studying bacteria in his laboratory when the discovery happened.
Alexander Fleming
Penicillin
It saved
7.
Eckert and Mauchly
The first computer
It was produced to increase the US Navy’s missiles.
8 of the
Percy Spencer
9.
It helps us prepare meals in minutes.
hospital when you die.
Are these statement true or false according to the text or is there no information?
高中英语Unit20NewFrontiersLesson3ScientificBreakthroughs教案北师大版选修720171027119
Unit 20 New Frontiers Lesson 3 Scientific Breakthroughs精美句子1、善思则能“从无字句处读书”。
读沙漠，读出了它坦荡豪放的胸怀；读太阳，读出了它普照万物的无私；读春雨，读出了它润物无声的柔情。
读大海，读出了它气势磅礴的豪情。
读石灰，读出了它粉身碎骨不变色的清白。
2、幸福幸福是“临行密密缝，意恐迟迟归”的牵挂；幸福是“春种一粒粟，秋收千颗子”的收获. 幸福是“采菊东篱下，悠然见南山”的闲适；幸福是“奇闻共欣赏，疑义相与析”的愉悦。
幸福是“随风潜入夜，润物细无声”的奉献；幸福是“夜来风雨声，花落知多少”的恬淡。
幸福是“零落成泥碾作尘，只有香如故”的圣洁。
幸福是“壮志饥餐胡虏肉，笑谈渴饮匈奴血”的豪壮。
幸福是“先天下之忧而忧，后天下之乐而乐”的胸怀。
幸福是“人生自古谁无死，留取丹心照汗青”的气节。
3、大自然的语言丰富多彩：从秋叶的飘零中，我们读出了季节的变换；从归雁的行列中，我读出了集体的力量；从冰雪的消融中，我们读出了春天的脚步；从穿石的滴水中，我们读出了坚持的可贵；从蜂蜜的浓香中，我们读出了勤劳的甜美。
4、成功与失败种子，如果害怕埋没，那它永远不能发芽。
鲜花，如果害怕凋谢，那它永远不能开放。
矿石，如果害怕焚烧（熔炉），那它永远不能成钢（炼成金子）。
蜡烛，如果害怕熄灭（燃烧），那它永远不能发光。
航船，如果害怕风浪，那它永远不能到达彼岸。
5、墙角的花，当你孤芳自赏时，天地便小了。
井底的蛙，当你自我欢唱时，视野便窄了。
笼中的鸟，当你安于供养时，自由便没了。
山中的石！当你背靠群峰时，意志就坚了。
水中的萍！当你随波逐流后，根基就没了。
空中的鸟！当你展翅蓝天中，宇宙就大了。
空中的雁！当你离开队伍时，危险就大了。
地下的煤！你燃烧自己后，贡献就大了6、朋友是什么？朋友是快乐日子里的一把吉它，尽情地为你弹奏生活的愉悦；朋友是忧伤日子里的一股春风，轻轻地为你拂去心中的愁云。
Unit20Lesson3ScientificBreakthroughs第一课时单词聚焦
【词汇讲解】Unit 20Lesson 3 Scientific Breakthroughs 第一课时单词聚焦考点1 dilemma【要点提示】n. 进退两难的局面；困难的选择I am in a dilemma about this job offer.对于提供的这份工作我不知道是接受还是不接受。
Mary is facing the dilemma of obeying her father or marrying the man she loves.是服从父亲还是嫁给自己所爱的人是玛丽面临着的难题。
Juvenile drug abuse is the great dilemma of the 1990's.青少年吸毒的陋习是90年代的大问题。
It's understandable that she veered from her former intention, considering her dilemma.考虑到她的困境，她改变初衷是可以理解的。
【连线高考】Ph.D. students who haven't completed their papers by the time their fellowships are finished will face a difficult________.A. dilemmaB. diplomaC. breakthroughD. term【答案与解析】 A 哲学博士生们在研究生职位期限终止时还没有完成其论文就要面临一种进退两难的境地。
dilemma “尴尬的境地”；diploma“文凭”；breakthrough “突破”；term “学期”。
考点2 procedure【要点提示】n. 程序；手续The new work procedure is a great improvement on / over the old one.新工序比起老工序来是一个巨大的改善They followed the usual procedure.他们遵循通常的程序。
2020学年高中英语Unit20NewFrontiersLesson3ScientificBreak
Lesson 3 Scientific Breakthroughs一、单词拼写1He was faced with the d of whether or not to return to his country.2The children were s into four groups.3The (总理) d eals with important affairs of the state.4The policeman had to w with the case in order to catch the criminal.5It’s too early to know the (结果) of her illness.二、完成句子1学生的年龄在19岁到22岁之间。
The st udents’ ages 19 22 years old.2他们拥有两套房子,另外还有一条船。
They own two houses, a boat.3他现在仍在同他的前任女友通信。
He is still his former girlfriend.4我正要锁门,这时天开始下雨了。
I lock the door it began to rain.5她下决心要让儿子改掉坏习惯。
She decided to her son his bad habit.三、阅读理解A(导学号)Airtight plastic bags can help farmers protect their harvests without the use of harmful chemicals.These bags are designed to keep air out of crops in ing them is a simple way to fight insects and keep crops fresh.Ten countries in West and Central Africa are involved in a project to improve the storage of cowpeas,also known as black-eyed peas.Farmers can lose much of the harvest to insects called bruchids(豆象),which grow from eggs to adults in a few weeks and then lay forty to sixty eggs.They can destroy the whole harvest within months.Farmers can sell their crops immediately.But selling crops at harvest time means more competition and lower prices.Or they can use pesticides(杀虫剂) to kill the bugs.But a crop scientist Dieudonne Baributsa says,“They end up misusing or overusing the pesticide.In Nigeria,a lot of cases of death have been reported.They usually call cowpeas ‘killer beans’ in Nigeria.”Mr Baributsa is a researcher at Purdue University in Indiana,America.The project is called PICS—Purdue Improved Cowpea Storage.He says the storage bags are thick enough so that any insects already in the cowpeas will die from a lack of oxygen.The lack of air will also help prevent the growth of bacteria that can ruin the harvest.The bags cost about two dollars each.Mr Baributsa says that is not much,especially if it means farmers can wait long enough to get a better price for their crops.The bags are produced locally.Donors currently support the project,but the groups involved are working to build a lasting market for the bags because donation for the project will not last forever.A company based in the United States called GrainPro makes another kind of airtight bags.These are called Super Grainbags.Phil Villers,the company’s president,says storing a harvest safely not only helps farmers earn more money,but also reduces the amount of the harvest loss to insects,spoilage and mishandling.“What does not get wasted means it is possible to feed a hungry world,” said Phil Villers.1What is the best title for this passage?A.Simple Bags Save the HarvestB.Plastic Bags Kill the InsectsC.Bruchids Do Harm to the HarvestD.Pesticides Threaten Food Safety,开头即点明了本文的中心,故选A项。
Unit 20 Lesson 3 Scientific Breakthroughs 教学设计2-优质公开课-北师大选修7精品
Unit 20 Lesson 3 Scientific Breakthroughs Teaching Aims:1.To use proper reading strategies for different tasks.2.To improve practical reading skills and ability3.To get familiar with scientific breakthroughs in the last centuryTeaching difficulties: learn to use reading strategiesTeaching Aids: computerTeaching procedures:Ⅰ. Warming up: quizUse some descriptions and pictures ，ask students to guess who the great scientist is.(由此引入本课话题：scientists，and scientific breakthroughs)Ⅱ. Reading Practice1.reading for general idea(1.) Show students the reading strategy for general idea. Then students read the text and do some exercises.(2) Ex2.Try to match the discoveries with how they were discovered？(3) multiple choice: The purpose of this article is ____.A. the introduction of the Wright BrothersB. the introduction of the process of scientific breakthroughC. introduction of the major scientific discoveries in the 20th centuryD. the contributions scientists made to the world(4) books closed. Match the pioneers with the deeds2. reading for specific information(1) show the reading strategies and let students work in groups to do some T or F exercise.(2) While Albert Einstein was rocking his one-year-old baby，he _______.A. was aware of recent scientific developments.B. thought over Marie Curie’s research.C. he showed that not even time，mass or length are constant.D. came up with the famous “ theory of relativity”(让学生思考：各个选项是否来自课本，干扰项是如何设置来迷惑人的，are the reading strategies useful and effective？)(让学生在探索中学会运用阅读技巧获取和处理信息，学会合作学习)Ⅳ. after readingTask 1. Vocabulary: Exs 5 in the text book and ask students to find some useful expression in the text.Task 2. Discussion: talk about scientific breakthroughs and their influence on our life。
Unit20Lesson3ScientificBreakthroughs第二课时单词聚焦
【词汇讲解】Unit 20Lesson 3 Scientific Breakthroughs 第二课时单词聚焦考点1 cure【要点提示】I. vt.治好；使恢复（健康）；使痊愈This medicine will cure your headache.这种药会治好你的头痛病。
She was cured of her disease.她的痛被治好了。
After a few days’ rest , she has cured her health.休息几天后，她已恢复健康。
They haven’t cured from the shock yet.他们还未从那次打击中恢复过来。
When I left hospital I was completely cured.我出院时已经彻底痊愈了。
II. n. 药；方法；治愈；痊愈；疗程There is no cure for the common cold.目前没有治愈感冒的良药。
Aspirin is a wonderful cure for colds.阿斯匹林是治感冒的妙药。
The cats proved to be a good cure for our mouse problem.最终证实猫是我们解决老鼠问题的好方法。
【连线高考】If I take this medicine twice a day, it should ______ my cold. [2011合肥质检]A. recoverB. healC. restoreD. cure【答案与解析】D 句意：假如这种药我一天吃两次，它就可以治愈我的感冒。
cure治疗，尤指用药物治愈疾病；restore指（使）恢复健康或使正常；heal着重指治好外伤或烧伤后的患部，使伤口愈合，不用于治感冒等疾病；recover恢复，不合句意。
考点2 fade【要点提示】I. vi. 消失；枯萎；(声音等)减弱下去；褪色Hopes of peace settlement are beginning to fade .和平解决的希望正在逐渐消失。
高中英语Unit20NewFrontiersLesson3ScientificBreakthroughs课件北师大选修7
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Alexander Fleming made another finding:a kind of blue mould,later called 5. penicillin ,could be used to kill bacteria. Eckert and Mauchly 6. invented the world’s first 7. computer so as to improve the 8. accuracy of the US Navy’s missiles. Percy Spencer discovered microwaves quite by 9. mistake . The breakthroughs of these pioneers have 10. changed the world completely.
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四、阅读课文PIONEERS OF SCIENCE,判断正误(T/F) 1.Percy Spencer discovered microwaves by mistake.( T ) 2.Einstein was at work when he thought of the formula “E=mc2”.( F ) 3.The person who discovered penicillin was Alexander Fleming.( T ) 4.Fleming had been studying bacteria in his laboratory when the discovery happened.( F ) 5.During the World War Ⅱ,Fleming’s discovery helped to cure plenty of people.( T )