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外研版高中英语必修一Module5教学设计1/7Module5AlessoninalabThismodulemainlyintroducesscientificknowledgeandtheoperationandreportofbasicexperimentstostudents.Questionscanoftenleadtoinquiryandphenomenonusuallymakespeoplethinkdeeply.Thus,studentscanvoluntarilypracticeandseekthetruthontheirown.Inthismodule,wearegoingtolearnsomecommonlyusedvocabularyandsentencepatternsaboutscientificexperiments.Intermsofgrammar,we’regoingtolearntheexpressingwaysofDegreesofComparison.Besides,studentsshouldalsolearntousetheformsofmodifierofDegreesofComparison.Inpronunciation,studentsareaskedtolearntheintonationofgeneralquestionsandspecialquestions.Atthesametime,afterlearningthismodule,studentsarerequiredtoimprovetheirabilitiesoflistening,speaking,readingandwritingaswellassomestrategiesoflearning.【知识与能力目标】1.掌握并记忆本课的重点词汇和短语2.培养学生的阅读能力，训练学生阅读速度，查读的阅读技巧；训练学生学会找主题句，归纳文章主旨，运用想象，联想，学会用英语思考的能力3.让学生复习倍数比较和形容词比较级，并掌握这些用法。【过程与方法目标】1.通过让学生观看图片来让学生对世界上著名科学家有所了解并了解一些化学材料和实验的英语表达。2.通过朗读指导，自主探究，小组活动等方面来引导学生掌握这个单元的单词，文章和知识点。外研版高中英语必修一Module5教学设计2/7【情感态度价值观目标】通过两个实验来连接起英语和化学方面的知识【教学重点】1.学习和掌握本课生词2.让学生掌握并灵活运用倍数比较和形容词比较级的用法。【教学难点】1.多层次的训练阅读能力，提高阅读水平怎样让学生灵活使用词汇、短语和句型来做题。Stepone:IntroductionandVocabularyTheteacherusessomepicturestointroducesomefamousscientistsathomeandabroadandthendoamatchgametohaveabetterunderstandingofthem.Doalisteningtointroducesomenewwordsinthismodule.1.(a)Waterexistsasasolid,aliquidandagas.(b)Waterexistsasasolidandaliquidonly.2.(a)Whenyouheatametal,itexpands.(b)Whenyouheatametal,itcontracts.3.(a)Steelisamixtureofironandothersubstances.(b)Steelisamixtureofironandoxygen.4.(a)Two-thirdsoftheearth’ssurfaceiswater.(b)50%oftheearth’ssurfaceiswater.教学过程外研版高中英语必修一Module5教学设计3/75.(a)Thedistanceofthesunfromtheearthis25.500kms.(b)Thedistanceofthesunfromtheearthis150,500,500kms.6.(a)Theearthis4.6millionyearsold.(b)Theearthis4.6billionyearsold.7.(a)Theearthistwiceaslargeasthemoon.(b)Theearthisforty-ninetimeslargerthanthemoon.DosomematchingexercisestoreviewsomenewwordsandinformSssomeEnglishexpressionsofmetals.Howtosaythecardinalnumbers,theordinalnumbers,fraction,decimalsandpercent.(英语中基数词、序数词、分数、小数和百分数的读法)1.基数词的读法A.先说“几十”，再说“几”，中间用连字符。B.先说“几百”，再加and,再加末两位数（或末位数）C.1000以上的数先从后向前数，每三位数加一“,”（千分位）；第一个“,”号前为thousand;第二个“，”号前为million；第三个“，”号前为billion。2.序数词的读法序数词一般以与之相应的基数词加词尾-th构成，如：tenth（第十），但下面这些基数词在变序数词时，有特别的地方。3.Fraction分数表达法式：分子要用基数词，分母用序数词，如果分子大于一，分母必须用复数形式1/5onefifth2/3twothirds3/7threesevenths4.Decimals小数表达法式：小数点以前按基数词读出，若整数部分为0可读作zero或nought，也可以不读;外研版高中英语必修一Module5教学设计4/7小数点读作point;小数点后按基数词分别单个读出。小数点后的0通常读字母O的音。4.Percent百分数百分数表达方式：%前是什么就读什么，读了之后加上百分号（%）percent就可了。Steptwo:Reading&vocabularyLetSslookatthesomepicturesandaskthemwhethertheyknowthenamesoftheequipment.AskSswhethertheyknowhowwecancarryoutanexperimentsuccessfully.Whatisthecorrectordertodescribethestagesofascientificexperiment?aimmethodresultconclusionPassageAelectricaladj.用电的，与电有关的electricityn.电equipmentn.设备，装备reactvi.（化学）反应reactionn.反应oxiden.氧化物steamn.蒸汽，水气Readthepassageasquicklyasyoucanandchoosethebesttitleforit.TheDifferentUsesofMetalsTheReactionofMetalsTheReactionofMetalswithOxygenReadthepassageagainandanswerthefollowingquestions:1.Whichofthemetalsinthetablereactsthemostwithoxygenandwater?2.potassium,calciumandsodium2.Whathappenswhenyouheatcalciuminoxygen?外研版高中英语必修一Module5教学设计5/7Itbeginstoformanoxide.PassageBPre-reading:What’shappeningtothenailinthepictures?Readthepassageandcompletethetable.1.Inthefirstpartoftheexperiment,the__isdry,notwet.2.Itshowsthatiron___________whentheairisdry.3.Inthesecondpartoftheexperiment,youmust___thewatertomakesurethereisno__init.4.Youadd_______tothewaterbecausethiskeeps__outofit.5.Itshowsthat___doesnotrustinwaterthathasno__init.CompletethepassagewithproperwordsaccordingtopassageAandBItishardtothinkofaworldwithoutmetals.Differentmetalshavedifferentmetalshavedifferentuses,forexample,ironcanbeusedin________equipment.Butaboveallweshouldknowwhetheritwill____underdifferentconditionsotherwiseitwillkeeptheequipmentfromworkingwell.Asweallknow,ifironisheatedinoxygen,itwillreactslowlybutwillnotforman_____.Ontheotherhand,ifitisputtogetherwithwateror_____,therewilla______reaction.Nextlet’sdoan__________tosupporttheabove.First,getatesttubefilledwithwaterandputitoverthe_____________to___forthreeminutes.Thenputthreeorfourcleannailsinthewaterwithsomeoiladdedtoitandleavethetubeforoneweek.Whathappens?Theirondoesnot____inair-freewater.Anotherexperiment,ifyouputthenailsinthetubewiththeairinitforoneweek,thenwhathappens?Ironrustsin_______water.Stepthree:Grammar倍数表达外研版高中英语必修一Module5教学设计6/71.Theearthis49timeslargerthanthemoon.=Theearthis49timesaslargeasthemoon.=Theearthis49timesthesizeofthemoon.用times表示倍数，一般只限于表示3倍或3倍以上的数表示两倍可以用twiceConclusion:1.A+be+倍数+as+形容词原级+as+B2.A+be+倍数+形容词比较级+than+B3.A+be+倍数+the+(size,height,length,weight,width,depth,age）+of+BExample:A:TheYangtzeRiverisaboutthreetimesaslongastheSonghuaRiver.B:TheYangtzeRiverisaboutthreetimeslongerthantheSonghuaRiver.C:TheYangtzeRiverisaboutthreetimesthelengthoftheSonghuaRiver.Stepfour:CulturalcornerDiscussion1.Whatsubjectsareyouinter