theproblemofthesnakeswarmingupandreading模块八学习教程.pptx
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1、Unit 3Unit 3第1页/共59页Warming upDiscuss in pairs which pictures show inventions and which show discoveries.An amphibious carStephensons“Rocket”DNA第2页/共59页 What are the important inventions of the 20th century?Which do you think is the most important one?第3页/共59页 Thomas Edison invented the electric bul
2、b.第4页/共59页Did Edison invent electricity?Can electricity be invented?Is electricity an invention or discovery?Why?第5页/共59页2.Which of this pictures show inventions?Does any of them show discoveries?第6页/共59页Stephensons“Rocket”第7页/共59页Stephensons“Rocket”(1781-1848)George Stephenson was one of the first
3、men to design engines for the railways which were new at that time.One of the first tracks to be laid was between Stockton and Darlington.Stephenson was one of the first railway engineers and in 1825 he drove the first train along the line.第8页/共59页An amphibious car第9页/共59页An amphibious car(2003)This
4、 is the first car that can travel safely on water and on land.When moving on water,the wheels of the car turn sideways and move into the body.The underneath of the car is strong enough to sail as a boat.It is a prototype and is not yet being produced for sale.This is an interesting modern invention.
5、第10页/共59页DNA第11页/共59页The structure of DNAThis was a discovery of Francis Crick and James Watson and published in 1953.These two scientists were the first to show that our genes consist of two spirals of DNA(called the double-helix).This work led directly to the human genome project in 2003,which dis
6、covered the Structure of DNA.第12页/共59页伽利略的望远镜牛顿制造的反射望远镜X射线广泛用于医学领域第13页/共59页谷腾堡发明的印刷机英国钟表匠阿克莱特发明的水力纺纱机第14页/共59页3.Work out rules that will help you decide what is discovery and what is an invention?(1)A discovery is A discovery merely makes known something that already exist in nature,such as the disc
7、overy on the New Continent by Columbia.第15页/共59页(2)An invention is something that created by human being,such as the lighting rod.第16页/共59页Give your examples of each category and fill in the blanks.Work out theconnections between them.第17页/共59页DiscoveriesInventions1.Electricity1.Systems of deliverin
8、g electrical light and heating to homes and offices2.Household machines for washing,ironing,keeping food cold,etc3.Computers,telephones,television,etc第18页/共59页DiscoveriesInventions2.The movement of air1.Airplane jet engines2.Air balloons,etcMachines to help people with serious disease(like kidney fa
9、ilure)3.The circulation of the blood第19页/共59页DiscoveriesInventions4.X-rays1.Body scanners to see whether you are ill2.Machines to treat illnesses(like cancer)Discoveries often lead to inventions.第20页/共59页4.In pairs discuss any modern 4.In pairs discuss any modern inventions you know.Describe inventi
10、ons you know.Describe them to your partner and them to your partner and explain how they changed explain how they changed peoples lives.peoples lives.第21页/共59页television 1923 colour television 1940第22页/共59页photocopier 1937air conditioner 1902第23页/共59页electronic digital computer 1942第24页/共59页Atomic b
11、omb 1945第25页/共59页Credit cards 1950第26页/共59页Penicillin 1928第27页/共59页 Do you know the stages every inventor must go through before they can have their invention approved?Inventing is a scientific activity and so follows similar stages to those used in research.Work out a suitable order.Pre-reading 第28
12、页/共59页1.Applying for a patent2.Finding a problem 3.Doing research 4.Testing the solution 5.Thinking of a creative solution 6.Deciding on the invention 第29页/共59页Patent office(专利局)plays the role of deciding what is an invention and what is not.And only inventions can get patens and so be recognized an
13、d protected.patents第30页/共59页ReadingThe problem of the snakes第31页/共59页Skim the whole passage and get the main idea:The text narrates _ and presents _and applying for _.the problem of the snakes the procedures of catching them a patent第32页/共59页Divide the passage into several parts and find out the mai
14、n idea for each paragraph.Part 1(para.1)the discovery of the problem of the snakes第33页/共59页Part 2(para.2)Doing some research about the habits of snakesPart 3(para.3)Deciding on the solution第34页/共59页Part 4(para.4-6)the attempts to catch the snakesPart 5(para.7-8)the requirements of getting a patent第3
15、5页/共59页I.Read the text carefully and fill in the blanks.Finding a problemSnakes came near my mothers house now and then and she wanted me to get rid of them without _ them.Doing researchI set out to research the _ of snakes to find the easiest way to trap them.harminghabits第36页/共59页Thinking of a cre
16、ative solutionThree possible approaches:removing the snakes_ attracting the snakes into a _ using male or female perfume or food _ the snakes so that they would become sleepy and could be easily caughtI decided to use the _ approach.habitattrapcoolinglast/third第37页/共59页Testing the solutionThree atte
17、mpts:putting the frozen bowl over the snakes habitat early in the morning putting the frozen bowl over the snakes habitat _ putting the frozen bowl over the snakes habitat in the evening and carrying a small _ to collect them the next morningThe third attempt was a success.in the eveningnet第38页/共59页
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