选修8 Unit3 Using language.ppt

Unit 3 Unit 3 Inventors and inventionsInventors and inventionsUsing Language Using Language Who is still standing?Jiangsu TVStep1 Lead-in Inventions&discoveries aPart1(Para.1)_Part2(Para.2)_ Part3(Para.3-5)_Part4(Para.6)_Part5(Para7)_Step2 Fast readingTask1 Skimming Find out the topic of each part.The microphoneHis most famous sayingThe telephoneThe Tetrahedron shapeAn inventor all his lifeTask2 Scanning Find out some general information of Bell._ Born in ScotlandInterested in helping the deaf,so _ When he was young _ In 1876 _ _ Discovered the tetrahedron shape_ Made his last invention In 1922 Died in CanadaIn 1847invented the microphoneMoved to Boston,USA.Invented the first telephoneSearching for a kite75 years oldStep3 Careful readingTask1 Work in groups of three and make exploration._1_2_3_4_5_61_2_3_Platform4_5_6_Group1Group2Group3Activities of each groupGroup 1 Make introductionsGroup 2 Find out applicationsGroup 3 Conclude scientific spiritsThe microphone(Para.1)The telephone (Para.3-5)The tetrahedron(Para.6)The microphone(Para.1):His mother:almost entirely _ Interested in helping deaf people _and in _ _his mothers forehead could make her understand.The telephone(Para.3-5):Never set out to invent _but to _the original telegraph and _a multiple telegraph Morse code:_tapped out along a wire _ Task2 Exchanging and sharingGroup1 IntroductionsGroup1 Introductionsdeafcommunicatedeaf education Pressing his lips against the telephone improvedesigna series of dots in a particular order A machine was designed to separate _and allow different conversations _.Experimented _to a deafmans ear drum and the other to _.He spokeinto the ear,the straw _on the glass.A flash of _:Sound waves could be sent_as well as in an electrical current.The tetrahedron shape(Para.6):While _ to carry a man into the air,Bell experimented _ and discovered the tetrahedron shape.sound waves at a timewith one end of a straw joined drew sound waves smoked glassinspirationsearching for a kite putting triangles together The first telephone message:_Mr.Watson-come herealong a wire One day when he was experimenting,H2SO4 splashedonto his leg.It was so painful that he screamed:Mr.Watson-come here I want to see you.Never had he thought his common words should have been the first telephone message.That night he wrote to his father:The day is coming when telegraph wires will be laid on to houses just like water or gas and friends will talk to each other without leaving home”.Group2 ApplicationsGroup2 ApplicationsThe microphone:The microphone:The telephone:The telephone:The tetrahedron:The tetrahedron:Alexander Bellcurious caringhardworkingdeterminedGroup3 Scientific spiritsGroup3 Scientific spiritsdynamicperseverant He believed that one should always be curious and his most famous saying was:“Leave the _ occasionally and _ _ the woods._ you do you will be certain to find something that you have never seen before._,explore all around it,and before you know it,you will have something _ to occupy your mind.All really big discoveries are the result of _.”beaten track dive intoFollow it upworth thinking about Every time thought His famous saying ScientificspiritsScientificspiritsTopicTopic:If you had a chance to say something to Bell,what would you like to say most?Step4 Free talkStep4 Free talk？Step5 Conclusion&reflectionWhat have you learnt in this class?Step6 HomeworkStep6 HomeworkExplore Bells inventions and discoveries in his whole life.1.Other inventions and discoveries.2.Their applications.3.Bells scientific spirits.