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TheSecondPeriodTheGeneralIdeaofThisPeriodInthisperiod we’regoingtoreadapassageonthereactionofmetals.TeachingAims
1. Improvethestudents’abilityofreadingcomprehension.
2. Getthestudentstohaveaglobalunderstandingofthereadingpassage.
3. Trainthestudentstoguessthemeaningofawordaccordingtothecontext.TeachingImportantPoints
1. Trainthestudents’readingability.
2. GettheSstounderstandthereadingtext.TeachingDifficultPointHowtoimprovethestudents’readingability.TeachingMethods
1. Individual pairworktomakeeverystudentworkinclass.
2. Fastreadingandcarefulreadingtounderstandthepassagecorrectly.TeachingAids
1. ataperecorder
2. aprojector
3. amultimediacomputerTeachingProceduresStep1Greetingsandlead-in Greetthewholeclassasusual.T: Wearegoingtodoanexperimenttoday. Ineedthesethingstodotheexperiment: testtubes Bunsenburner salt...Whenwedoanexperiment weshouldfirstofallhaveanaim.Weshouldusepropermethods.Weshouldfindtheresultanddrawaconclusion.HaveyoueverdoneascientificexperimentWhatisthecorrectorderofascientificexperimentShowthewordsonthescreen.conclusion aim result method T: Putthewordsintocorrectorder.aim→method→result→conclusion Step2Motivation T: Asweknowquitewell metalsareveryuseful.WhatarethedifferentusesofmetalsWhatshouldweknowwhenusingmetalsWhichreactsmostwithwater potassiumorironYouwillhaveabetterunderstandingofmetalsafterreadingPassageA.Showthethreequestionsonthescreen.1Whatarethedifferentusesofmetals2Whatshouldweknowwhenweusemetals3Whichreactsmostwithwater potassiumorironStep3Fastreading TeacherallowstheSsafewminutestodofastreading.T: WhohasgottheanswersS: Differentmetalshavedifferentuses forexample steelisusedincarsandironisusedinelectricalequipment.T: WhatshouldweknowwhenweusemetalsS: Whenweusemetals itisimportanttoknowhowtheyreactwithdifferentsubstances.T: Sowemustbecarefulwhenweusemetals.WhoshouldbegoodatusingmetalsS: Scientists.S: Engineers.S: Mechanics.T: Verygood!Andwhichreactsmostwithwater potassiumorironSs: Potassium.T: DowehavetokeepinmindhowmetalsreactwithdifferentsubstancesS: Yes.S: Notnecessarily. It’senoughtohavesomecommonsense.We’dbetterleavethemtotheexperts.S:Idon’tquiteagreewithyou.Betterleavethemtothepeoplewhoareinterestedinthisfieldofscience.T: Doyouagreewithhim/herSs: Yes./No.Step4Detailedreading Readthepassageagain.AnswerthequestionsinPart3intheSB P
44.Thisisagoodtimetoenablethestudentstolearntoreadthetable.Answers:1Potassium calciumandsodium.2Itburnstoformanoxide.3Magnesium aluminiumandzinc.4Ithasaslowreaction.5No itdoesn’t.Step5Furtherreading T: NowreadPassageAcarefullytochoosethebesttitleforit.S: TheReactionofMetalsisthebesttitle.Step6Languagepoints
1. Itishardtothinkofaworldwithoutmetals.it是形式主语真正的主语为tothinkofaworldwithoutmetals这是英语中一个很重要的句型AsktheSstomakesomesentences usingthepattern.Itishardtothinkofaworldwithoutfriendship.Itishardtothinkofaworldwithoutelectricity.Itisimportanttoreadthedirectionsbeforeyouusethemachine.Itispossibletobuildaradiowithoutusingmetals.T: PutthesentencesintoChineseonebyone.
2.equipment不可数名词,“设备装备”1fire-fightingequipment消防设备thecostofequipment设备费用2常见的不可数名词有:news新闻information信息advice劝告fun嬉戏practice实践furniture家具
3.Whenweusemetals itisimportanttoknowhowtheyreactwithdifferentsubstances.使用金属时要了解金属和不同的物质如何发生反应这一点很重要1reactwith...对……起化学反应Potassiumreactswithoxygeneasily.钾和氧容易起反应reactto...对……产生反应回应Theeyereactstothelight.眼睛对光会起反应Hedidn’treacttotheirwords.他对于他们的话没作反应2substance不可数名词,“物质”achemicalsubstance一种化学物质Whatsubstancedoesitconsistof 它是由什么物质组成的
4. Thereactionofmetalswiththesesubstancescanbeputinorder.put...inorder把……按顺序排列以order为中心的短语有:keeporder维持秩序obeyorders服从命令saynumbersinorder照顺序数数ingoodorder井然有序outoforder顺序乱的;出故障的Step7Practice Learntosaythenamesofthemetalsinthetable.Showtherealobjectorthepictureofeachmetal.Step8Assignment
1. Learnthenewwordsbyheart.
2. RecitePassageA.
3. PreviewPassageB.Step9ThedesignofthewritingontheBlackboard Module5 ALessoninaLabTheSecondPeriodreactwith reacttoachemicalsubstanceWhatsubstancedoesitconsistofput...inorder keeporderobeyorders saynumbersinorderingoodorder outoforderStep10ActivityandInquiry StepsStudents’ActingTeacher’sOrganizing1Readthroughtheexamplesandhavetheclassrepeatthemaftertheteacher.Getthestudentstorepeataftertheteacher.2Answerthequestionsindividually.Askthestudentstoanswerthe questionsindividually.3Putthestudentsinpairstocomparetheiranswers.Getthestudentstoworkinpairstocomparetheiranswers.4Callbacktheanswersfromtheclass.Collecttheanswersfromtheclass.。