《A-lesson-in-a-lab》教案正式版

Module5AlessoninalabPeriod1Teachingaims:1.Letthestudentsknowsomewordsrelatedtoexperiments,thelabandsomethinglikethat2.Reviewtheusageofnumbers/fractions/percentages3.KnowsthaboutDegreesofcomparison.Teachingsteps:I.Allofushavelearnedphysics,biologyandchemistryinmiddleschool.Nowlet’shaveatesttoseehowmuchyouknow.DealwithActivity1onpage41.Choosethecorrectanswerstothequiz.Nowplaythetapeforthestudentstolistenandchecktheiranswers.Answers:1a2a3a4a5b6b7bII.FirstreadthewordsandthenaskthesstotranslatethemintoChinese.Atlastputtheminpairsorgroups.Answers:air-gas-oxygencontract-expandearth-sun-moongas-liquid-solidIII..Answerthequestions.Answers:1)Electricity,iron,somemetalsandairarenatural2)Steel,somemetalsandglassareman-made3)Electricityandsomemetalscanbeman-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，谓语动词要根据of后面的名词决定。Answers:two-fifthsfive-eighthsnine-tenthsthree-eighthsfive-sixthsVI.Percentages基数词+percent/percent注意：percent永远单数形式作主语时，谓语动词要根据of后面的名词决定。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）N倍或A的长度（宽度，高度，大小，重量等）是B的N倍，可用下列几种句型。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.他父亲的年纪有他两倍大。2.A+be+倍数+计量形容词比较级+than+BTheYangtzeRiverisalmosttwicelongerthanthePearlRiver.长江差不多比珠江长两倍。Thedictionaryisexactlyfivetimesmoreexpensivethanthatone.这本字典比那本恰好贵5倍。3.A+be+倍数+the+计量名词+of+BThenewlybroadenedsquareidfourtimesthesizeofthepreviousone.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+BThesizeofthenewlybroadenedsquareisfourtimesthatofthepreviousone.新扩建的广场为以前的四倍大。5.其它I'mtwice/doublehisage.我的年龄是他的两倍。I'vepaidfivetimestheusualpriceforthestamp.我出了5倍于往常的价格买这枚邮票。Theaverageincomeofthestaffhasbeenincreasedby50percentcomparedwithlastyear.与去年相比，该单位职工的收入增加了50%.ThepriceofTVsaretwofold(adj.两部分的,双重的)downovertheseyears.近几年来，电视机的价格下降了两倍。the+比较级……，the+比较级……意为“越……，越……”。前面部分是从句，后面部分是主句。Theharderyouwork,themoresuccessfulyouwillbe.Theearlieryoucome,thebetterplaceyoucanfind.“比较级+and+比较级”表示“越来越……”。Hebecomesfatterandfatter．比较级前还可以用much，even，still，alittle等来修饰。ⅦHomeworkDealwiththeexercisesonpages45,46and47Module5AlessoninalabPeriod2Teachingaims:1.RevisetheusageofDegreesofComparisonbytranslatingsomesentences.2.KnowmoreaboutthetwoexperimentsTeachingsteps:I.TranslatethefollowingsentencesintoEnglish.1．这座新大楼是那幢旧楼的3倍大小。Thenewbuildingisthreetimesthesizeoftheoldone.Thenewbuildingisthreetimeslargerthantheoldone.Thenewbuildingisthreetimesaslargeastheoldone.2．孙老师说英语和你一样流利。MrSunspeaksEnglishasfluentlyasyou.3．他越努力学习，就越感到快乐。Theharderheworks,thehappierhefeels.4．那个女孩越长越漂亮了。Thegirlbecomesmoreandmorebeautiful.II.CometotheReadingandVocabulary.Askthequestion:Whatarethestagesofascientificexperiment?Theyareasfollows:aim—method---result—conclusionNowreadpassageAandfinishActivities2and3.Answer:ThereactionofmetalsAnswers:1.potassium,calcium,andsodium2.Itburnstoformanoxide3.Magnesium,aluminum,andzinc4.Ithasaslowreaction.5.No,itdoesn’t.III.Prepareforthetest.Preparesometesttubes,someoil,testtubeholder,cottonwool,ironnails,Bunsenburner.Describetheexperimenttothestudentsandaskthestudentstoexplainwhatwillhappenintheend.AskthestudentstoreadPassageBandtrytofillinthetableonpage45.Answers:Ironindryairironinair-freewaterironinordinarywaterStageAcottonwoolwaterwaterStartingexperimentStageB1weeklaternailswaterStageCResultIrondoesn’trustIrondoesnotrust.Ironrusts.Askthestudentstoreadthetextforsometimeandtrytoretelltheexperimentwiththehelpofthetable.Ifthereistime,checkifsomecan.IV.Homework:Retelltheexperimentandreportasimilarexperiment.Module5AlessoninalabPeriod3Teachingaims:Enablingthestudentsto1.knowhowtoreadthedecimals.2.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.Lookatthisphoto.ThisboyisMarkKendon.MarkKendonisaCanadianstudentatSeniorHighschool.Thepassageisabouthisdescriptionofscienceteachinginhisschool.Nowreadthepassagequicklyandtrytofindtheanswerstothefollowingquestion:WhyhasMarkbecomemoreinterestedinscience?--Becausehehasmovedtoanewschoolwithgoodfacilitiesandteachers.Readthepassageagainandtrytogetasmuchinformationaspossible.Dothefollowingquestions.WasMarkinterestedinscienceatfirst?--No.Whathappenedtohisfeelingsaboutscience?--Hisfeelingsaboutsciencehavenowchanged.Howdidhegetinterestedinscience?---Thescienceteachersatthenewschoolareexcellent,thesciencefacilitiesareverygood,withlabsthathaveallthelatestequipment.Wearetakentointerestingpublicsciencelecturesaboutfourtimesaterm.IV.Discussion1.Howdoourteachersteachsciencesubjects?2.Isitagoodideatoasksomescientiststogiveuslectures?V.Homework:RevisethewholemoduleandgettheexercisesintheWORKBOOKready.人品好的人，自带光芒，无论走到哪里，总会熠熠生辉。人活着，谁都会有烦恼，每天都有烦恼，最重要的是你不理会烦恼，烦恼自然就没有了！因此，朋友们，最好的活法，就只要记住这两句话：烦恼天天有，不捡自然无！当你不开心的时候，想想自己还剩下多少天可以折腾，还有多少时间够你作践。你开心，这一天过了；不开心，一天也过了。想明白了，你就再也不会生气了。当你烦恼的时候，想想人