高中英语 module5 a lesson in a lab 3 period 外研版必修1

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1、TheThirdPeriodALessoninaLabTheGeneralIdeaofThisPeriodInthisperiodwe’regoingtolearnanotherreadingpassage.TeachingAims1　.Learnandmasterthefollowingwordsandexpressions:rust　boilordinary　steam　float　form　dissolve　addto　keepoutof2.　Learntodescribeasimplescientificexperime

2、nt.TeachingDifficultPoints1.　EnabletheSstowriteareportonascientificexperiment.2.　Learntousethenewwordsandexpressionsinthispart.TeachingMethodsReading,　questionandanswer.TeachingAids1.　ataperecorder2.　acomputer3.　sometesttubes,　nails,　Bunsenburner,　balance,　tongsTea

3、chingProceduresStep1Greetings　Greetthewholeclassasusual.Step2Revision　ShowthemetalslearnedinthelastperiodtotheclassandaskthemtonametheminEnglish.Step3Presentation　Readthepassagetofindtheanswerstothequestions.1.　What’stheaimoftheexperiment?2.　Whatequipmentdoweneedi

4、nordertodotheexperiment?3.　Howlongdoesittaketoseewhetherironrustsinthethreecases?4.　Howcanwetaketheairoutofwater?5.　Howcanoilpreventairenteringwater?(Showthequestionsaboveonthescreen.)Step4Reading　Readthepassageindividuallyandthendiscussinpairsorgroups.　It’sagoodtimetol

5、earnthenewwordsandunderstandthemeaningofthepassage.Step5CallbacktheanswersfromtheSs　1.　Itistofindifironrustsindryair,　inair－freewaterorinordinarywater.2.　Weneedsometesttubes,　testtubeholder,　cottonwool,　oilandBunsenburner.3.　Aweek.4.　Wecantakeairoutofwaterbyboilingit.

6、5.　Becauseoilislighterthanwater,　itstaysonthesurfaceofwater.Step6Learnthenewwords　1.　AsktheSstopickoutthenewwordsinPassageB.Writethewordsontheblackboard.rust,　testtubes,　nails,　Bunsenburner,　boil,　ordinary　　　　　　　　　　　　　　2.　Readthenewwordsafteryoutwice.Bringouttheappara

7、tusonthedesk.Step7Carefulreading　T:　Well.　Nowrereadthepassagecarefullytofurtherunderstandit.ThenworkinpairstofillintheblanksonPage45.Step8Languagepoints　1.　Addsomeoiltothewater.在水中加点油。addsth.tosth.elseAddsomesugartothesoup.在汤里加点盐。Heplannedtoaddaroomtohishouse.他打

8、算再扩建一间屋子。Fiveaddedtotenmakesfifteen.五加十等于十五。2.　Thiswillkeepairoutofthewater.这会