1、Unit 20 Lesson 3Scientific BreakthroughsSome discoveries or inventions in the 20th century:Means of transport:Wright BrothersThe change in communication: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 artif
2、icial satellite,Sputnik 1,was launched by the Soviet Union in 1957.His greatest discovery is the creation of his famous Theory of Relativity.Albert EinsteinAlbert Einstein was considered the greatest scientist of the 20th century.Edwin Hubble was an American astronomer.His most important discovery w
3、as the expanding universe.Edwin HubbleHubble space telescopeAlexander Fleming,a Scottish biochemist,discovered Penicillin.Alexander FlemingThe designer of ENIAC,the first commercial computer made in the United States.John William Mauchly and J.Presper EckertThe World First ComputerPercy Spencer,an A
4、merican engineer and inventor,discovered microwaves.Percy Spencer1.The equation E=mc22.Penicillin3.The first computer4.Other galaxies5.MicrowaveTry to match the discoveries with how they were discovered?a)Scientists worked together as a teamb)There was a lucky accidentc)A scientist did research for
5、many yearsd)A scientist was inspirede)There was a mistake1.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
6、 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?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 develo
7、ped 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.1.Eins
8、tein 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.FT
9、TAre these statement true or false according to the text or is there no information?NINI6.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 compute
10、r 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.NITNITNIFFReading Task:In the 20th century,many amazing discov
11、eries were made in medicine,communications and transport,let alone our knowledge of 1 .Some pioneersDiscoveries Inventions SignificanceAlbert Einstein 2 .It showed how a small piece of mass could produce an unbelievable amount of 3 .Theory of relativityIt showed time,mass and length 4 .according to
12、our experience of them.Edwin Hubble 5 like the one we live in It proved that the universe was vastly 6 .than had previously been thought.Alexander FlemingPenicillinIt saved 7 .Eckert and MauchlyThe first computerIt was produced to increase the 8 of the US Navys missiles.Percy Spencer 9 .It helps us
13、prepare meals in minutes.Without these 10 in science and technology,we would have had a completely different world.Reading Task:In the 20th century,many amazing discoveries were made in medicine,communications and transport,let alone our knowledge of 1.Some pioneersDiscoveries Inventions Significanc
14、eAlbert Einstein2.It showed how a small piece of mass could produce an unbelievable amount of 3.Theory of relativityIt showed time,mass and length 4.according to our experience of them.the world and spaceE=mc2energychangeReading Task:Edwin Hubble5.like the one we live in It proved that the universe
15、was vastly 6.than had previously been thought.Alexander FlemingPenicillinIt saved 7.Eckert and MauchlyThe first computerIt was produced to increase the 8.of the US Navys missiles.Percy Spencer9.It helps us prepare meals in minutes.Without these 10.in science and technology,we would have had a comple
16、tely different world.New galaxieslargermillions of livesaccuracyMicrowavesbreakthroughs introductionintroduction Body Body ConclusionConclusionSimple outline A brief introduction of scientific breakthroughs in the 20th centuryPara.9Some great pioneers of science and their inventions or discoveriesTh
17、e significance of these breakthroughs Discussion:It is predicted（预言）（预言）that there will be 5 scientific breakthroughs in the 21st century.What do you think will be the 5 scientific breakthroughs and how will they influence our life?Have a discussion and voice your opinion.1.Well know where we came f
18、rom.Why does the universe exist?2.Well crack the genetic code and conquer cancer.3.Well live longer(120 years?).4.Well“manage”Earth.Well stop talking about the weather but will do something about it.Well gradually learn how to predict the effects of human activity on the Earth,its climate and its ecosystems.5.Well have a brain“road map”.Well be able to say with certainty which ones are working when you read a word,when you say a word,why you think about a word,and so on.1.Do exercise 5 on page 25.2.Preview Communication Workshop.Thanks for listening!Thanks for listening!
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