高中英语module5alessoninlab教案外研版必修1

Module5AlessoninalabPeriod1Teachingaims:Letthestudentsknowsomewordsrelatedtoexperiments,thelabandsomethinglikethatReviewtheusageofnumbers/fractions/percentagesKnowsthaboutDegreesofcomparison.Teachingsteps:I.Allofushavelearnedphysics,biologyandchemistryinmiddleschool.Nowletseehowmuchyouknow.DealwithActivity1onpage41.Choosethecorrectanswerstothequiz.Nowplaythetapeforthestudentstolistenandchecktheiranswers.Answers:1a2a3a4a5b6b7b

’shaveFirstreadthewordsandthenaskthesstotranslatethemintoChinese.Atlastputtheminpairsorgroups.Answers:air-gas-oxygencontract-expandearth-sun-moongas-liquid-solidIII..Answerthequestions.Answers:Electricity,iron,somemetalsandairarenaturalSteel,somemetalsandglassareman-madeElectricityandsomemetalscanbeman-madeandoccurnaturallyIV.Turntopage42.Activity1Readthenumbers.Payattentiontothepositionoftheword“and”.V.Fractions.基数词+序数词，当分子大于1时，分母要加s作主语时，谓语动词要依据of后边的名词决定。Answers:two-fifthsfive-eighthsnine-tenthsthree-eighthsfive-sixthsVI.Percentages基数词+percent/percent注意：percent永久单数形式作主语时，谓语动词要依据of后边的名词决定。VII.Degreesofcomparison1&2英语倍数表达法用英语表达"A是B的N倍长（宽，高，大，重等）"，"A比B长（宽，高，大，重等）倍"或"A的长度（宽度，高度，大小，重量等）是B的N倍"，可用以下几种句型。1."A+be+倍数+as+计量形容词原级+as+B".Thistreeisthreetimesastallasthatone.这棵树是那棵树的三倍高。Hisfatheristwiceasoldashe.他父亲的年龄有他两倍大。2."A+be+倍数+计量形容词比较级+than+B"TheYangtzeRiverisalmosttwicelongerthanthePearlRiver.长江差不多比珠江长两倍。Thedictionaryisexactlyfivetimesmoreexpensivethanthatone.这本词典比那本恰巧贵5倍。3."A+be+倍数+the+计量名词+of+B"Thenewlybroadenedsquareidfourtimesthesizeofthepreviousone.新扩建的广场是未扩建时的四倍大。4."The+计量名词+of+A+be+倍数+that+of+B"Thesizeofthenewlybroadenedsquareisfourtimesthatofthepreviousone.新扩建的广场为从前的四倍大。5.其余I'mtwice/doublehisage.我的年龄是他的两倍。I'vepaidfivetimestheusualpriceforthestamp.我出了5倍于平时的价钱买这枚邮票。Theaverageincomeofthestaffhasbeenincreasedby50percentcomparedwithlastyear.与昨年对比，该单位员工的收入增添了50%.ThepriceofTVsaretwofold(adj.两部分的,两重的)downovertheseyears.近几年来，电视机的价钱降落了两倍。the+比较级，the+比较级意为“越，越”。前面部分是从句，后边部分是主句。Theharderyouwork,themoresuccessfulyouwillbe.Theearlieryoucome,thebetterplaceyoucanfind.“比较级+and+比较级”表示“愈来愈”。Hebecomesfatterandfatter．比较级前还能够用much，even，still，alittle等来修饰。HomeworkDealwiththeexercisesonpages45,46and47Module5AlessoninalabPeriod2Teachingaims:RevisetheusageofDegreesofComparisonbytranslatingsomesentences.KnowmoreaboutthetwoexperimentsTeachingsteps:I.TranslatethefollowingsentencesintoEnglish.1．这座新大楼是那幢旧楼的3倍大小。Thenewbuildingisthreetimesthesizeoftheoldone.Thenewbuildingisthreetimeslargerthantheoldone.Thenewbuildingisthreetimesaslargeastheoldone.2．孙老师说英语和你同样流畅。MrSunspeaksEnglishasfluentlyasyou.3．他越努力学习，就越感觉快乐。Theharderheworks,thehappierhefeels.4．那个女孩越长越美丽了。Thegirlbecomesmoreandmorebeautiful.II.CometotheReadingandVocabulary.Askthequestion:Whatarethestagesofascientificexperiment?Theyareasfollows:aim—methodresult—conclusionNowreadpassageAandfinishActivities2and3.Answer:ThereactionofmetalsAnswers:potassium,calcium,andsodiumItburnstoformanoxideMagnesium,aluminum,andzincIthasaslowreaction.No,itdoesn’t.III.Prepareforthetest.Preparesometesttubes,someoil,testtubeholder,cottonwool,ironnails,Bunsenburner.Describetheexperimenttothestudentsandaskthestudentstoexplainwhatwillhappenintheend.AskthestudentstoreadPassageBandtrytofillinthetableonpage45.Answers:StageA

Ironindryaircottonwool

ironwaterwater

in

air-free

ironwaterwater

in

ordinaryStartingexperimentStageB

nails

water1weeklaterStageC

Irondoesn

’trustIrondoesnotrust.

Ironrusts.ResultAskthestudentstoreadthetextforsometimeandtrytoretelltheexperimentwiththehelpofthetable.Ifthereistime,checkifsomecan.IV.Homework:Retelltheexperimentandreportasimilarexperiment.Module5AlessoninalabPeriod3Teachingaims:Enablingthestudentstoknowhowtoreadthedecimals.knowsthaboutthescienceteachinginaseniorhighschool.Teachingsteps：I.Asksomestudentstoreadthefollowingnumbers:623,100,486563,256,36912,000,865,0653/72/93/1026%48%0.83.619.3622.58II.DealwithEverydayEnglishonpage48.Answers：1a2b3a4b5aIII.Turntopage49.CulturalCorner.Highschool.Thepassageisabouthisdescriptionofscienceteachinginhisschool.Nowreadthepassagequicklyandtrytofindtheanswerstothefollowingquestion:WhyhasMarkbecomemoreinterestedinscience?--Becausehehasmovedtoanewschoolwithgoodfacilitiesandteachers.Readthepassageagainandtrytogetasmuchinformationaspossible.Dothefollowingquestions.WasMarkinterestedinscienceatfirst?--No.Whathappenedtohisfeelingsaboutscience?--Hisfeelingsaboutsciencehavenowchanged.Howdidhegetinterestedinscience?Thescienceteachersatthenewschoolareexcellent,thesciencefacilitiesareverygood,withlabsthathaveallthelatestequipm