高二英语 Unit12 Fact and fantasy（第二课时）教案 人教版VIP免费

TheSecondPeriodTeachingAims:1.Learnandmastertheusefulwordsandphrases.2.Trainthestudents’readingability.3.LetthestudentslearnabouttheFrenchwriterJulesVerneandhistwofamoussciencefictions.TeachingImportantPoints:1.Improvethestudents’readingability.2.Mastertheusefulphrases.TeachingDifficultPoints:1.Howtomakethestudentsunderstandthepassagebetter.2.HowtohelpthestudentsfinishalltheexercisesinPost-reading.TeachingMethods:1.Discussionbeforereadingtomakestudentslearnmoreaboutsomescientificfacts.2.Fast-readingmethodtogetthegeneralideaofthepassage.3.Careful-readingmethodtogetthedetailedinformationinthetext.4.DiscussionafterreadingtohelpthestudentsfinishthetasksinPost-reading.TeachingAids:1.themultimedia2.theblackboardTeachingProcedures:StepⅠGreetingsandRevisionGreetthewholeclassasusual.T:Inthelastperiod,welearntsomeusefulexpressionsusedtoexpressbeliefsanddoubts.Now,I’llcheckyourhomeworktoseewhetheryoucanusethemfreely.Who’dliketoactoutyourdialogue?(Twostudentsstandupandactouttheirdialogue.)StepⅡLead-inandPre-readingT:Thankyouforyourgoodperformance.Yesterdaywetalkedaboutsciencefictionandalsohadascientifictest.Bydoingtheexercises,welearntsomescientificfacts.Today,let’scontinuetolearnmoreaboutscientificfacts.Lookatthepicturesonthescreen.(Showthefollowingpicturesonthemultimedia.)T:Herearethreegreatinventions.Whocansaywhentheinventionsinthepicturesweremade?S1:Electricrailwaywasinventedintheearlyyearsofthe20thcentury.S2:ThomasEdisoninventedthelightbulbin1879.S3:Steam-poweredboatwasmadein1807.T:You’requiteright.Now,lookatthescreen,please.(Teachershowsthefollowingonthescreen.)1.Whenwaselectricitydiscovered?2.Howwasitusedinthefollowingtwohundredyears?3.Intheearly19thcentury,peoplehadnoideawhattheinsideoftheearthmightlooklike.Canyouexplainwhatweknowaboutittoday?T:Workingroupsoffourtodiscussthequestions.Chooseoneofyoutoactastheleaderofyourgroup.Recordtheresultsofyourdiscussion.Afewminuteslater,I’llaskyourleadertoreportyourresult.Areyouclearaboutthat?Ss:Yes.T:OK.Youcanbegin.(Duringthediscussion,teachergoesamongthestudentsandjoinstheminthediscussion.)T:(Afewminuteslater)Areyouready?Ss:Yes.T:OK.Let’slookatthefirstquestion.Who’dliketoanswerit?S4:Electricitywasdiscoveredin1600byGilbert.T:Verygood!Thesecondquestion,whocantry?S5:Afterelectricitywasdiscovered,peoplebegantouseittoservepeopleinmanyfields.Takeindustryforexample,peopleuseittocontrolmachinesandproduceagreatnumberofproducts,suchascars,planes,weapons,etc.S6:Electricityisalsousedinagriculture.Withelectricitypeoplecancontrolthetemperatureandhumiditytomakevegetablesgrowbetter.S7:Inourdailylife,electricityisveryuseful.Forexample,watchingTVneedselectricity,playingcomputersneedselectricity,heatersneedelectricity,andevenourwatchesneedelectricity.So,withoutelectricity,ourlifewouldbeamess.T:Whatyousaidisquiteright.Indeed,electricityisveryimportanttous.Itisusedwidelyineveryfield.Thelastquestion.Whocanexplainit?S8:Theearthonwhichweliveisabigballofveryhotrock,whichconsistsofthreeparts:theearth’scrust,theearth’smantleandtheearth’score.Thetemperatureinsideisveryhigh.It’shotinsidebutcoldoutside.Ithasashelljustlikeanegg.Therearesomecracksintheshelloftheearthinsomeplaces.Hotwatershootsintotheairthroughthosecracksandsteamcomesupfrompoolsofhotwater.T:Welldone!Youdowellingeography,indeed.StepⅢReadingT:Yesterday,wetalkedaboutafamouswriter,w...