Unit3InventorsandinventionsheFirstPeriodSpeakingTeachinggoals教学目标1.Targetlanguage：discovery,application,evaluate,presentation,alternative,messenger,gettogether,makeacasefor,addup2.AbilitygoalsEnablethestudentstotalkaboutinformationanddifferent.3.LearningabilitygoalsHelpthestudentslearnhowtotalkaboutinventionsanddiscoveries.Teachingimportant&difficultpointsHowtotalkaboutinventionsanddiscoveries.TeachingmethodsDiscussion.TeachingaidsAcomputerandaprojector.Teachingprocedures&waysStepIWarmingupTalkaboutinventionsanddiscoveries.T:Theimportanceofinventionstosocialprogresscanneverbechanged.Eachinventioncarriestheworldastepforwardandprovidesstimulationforlaterones.Whitinventionsturningupallthetime,ourworldisalwaystakingonanewlook.Butdoyouknowwhataninventionis?S1:ThecreationofsomethingnewS2:Acreation(anewdeviceorprocess)resultingfromstudyandexperimentation.S3:Thecreationofnewthings.…Askthestudentstotalkaboutthepictureswiththeteacher’shelp,andthendiscussthefirsttwoquestions.T:Andwhatisadiscovery?What’sthedifferencebetweenadiscoveryandaninvention?Nowlookatthepicturesonpage1.Workinpairsandtalkaboutthethreedifferentthings,tellingthemapartandgivingreasons.Showthefollowing.1.Whichothesepicturesshowinventions?Doesanyofthemshowdiscoveries?2.Workouttworulesthatwillhelpyoudecidewhatisadiscoveryandwhatisaninvention?S1:Ithinkthefirsttwoareinventions,i.e.theamphibiouscarandStevenson’s“Rocket”whilethelastpictureabouttheDNAisakindofdiscovery.Becausethefirsttwoproductswerequitenewtopeopleatthattimeandnoonehadeverseenordesignedsuchkindofvehiclesbeforethoughsomeothershadmadesimilarcarsormachineswhichhadlessfunctionsandadvantagesasthesetwo.IthinkthepictureabouttheDNAisakindofscientificdiscoveryinbiologybecausesuchcellsandtheirstructuredoexistinlivingcreaturesandtheyhavebeenfoundoutbyacertainscientistandaremadeknowntothepublicnowadays.SoIthinkadiscoveryissomethingexistingbeforebutunknownwhileaninventionissomethingunknownandnotexistingbefore.S2:Ithinkthefirsttwopicturesshowusgreathumaninventionsaboutthetransportationbecausetheywereinventedbypeopleforcertainpurposesandtheyhadspecialadvantagesandcouldsatisfypeople’sneedsinsomeways.OntheotherhandthethirdpictureshowingtheformationofDNAisakindofdiscoverybecausethesespecialcellsexistandfunctioninthebodyoflifeallthetimenomatterwhodiscoversitorwhenandwhereitisdiscovered.Inmyopinionadiscoveryissomethingfoundoutorbroughttoviewnowbutitwasunknownbeforewhileaninventionissomethingcreatedordesignedbypeople,whichiscompletelynewnotonlynowbutinthepast.T:Well,fromthesepictureswecanseethatthereliesdifferencesbetweenadiscoveryandaninvention.Therearecertainrulesorquestionsyoushouldpayattentiontowhiledistinguishingthem.Diditexistinthepast?Isitcreatedordevelopedbypeople?Aninventionissomethingthatiscreatedbyahumanbeing,suchasthelightningrod.Tothecontrary,adiscoverymerelymakesknownsomethingthatalreadyexistedinnature,suchasthediscoveryontheNewContinentbyColumbia.OK.Let’sgoonwithsomeotherquestionsofthispart.Youmaytalkwithyourpartnerfirstbeforewehaveacheckfiveminuteslater.Showthefollowing.Whatmoderninventionsdoyouknow?Describethemtoyourpartnerandhowusefultheyareinlifetoday.S1:Adidas1isthethinkingshoeswithabuilt-inmicroprocessorthatdecideshowsoftorfirmthewearerneedsthesupport.IthasbeenchosenbyPopularSciencemagazineasthebestrecreationinventionof2004.Itisverycomfortab...
