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1Unit1GreatscientistsTeachingaims1.Tohelpstudentslearntodescribepeople2.TohelpstudentslearntoreadanarrationaboutJohnSnow3.Tohelpstudentsbetterunderstand“Greatscientists”4.Tohelpstudentslearntousesomeimportantwordsandexpressions5.Tohelpstudentsidentifyexamplesof“ThePastParticiple(1)asthePredicative&theattribute”Period1WarmingupandreadingTeachingProceduresI.WarmingupStepILeadinTalkaboutscientist.T:Hi,morning,class.Nicetoseeyouonthisspecialday,thedaywhenyoubecomeaseniortwograder.IamhappytobewithyouhelpingyouwithyourEnglish.Todaywearetoreadaboutacertainscientist.Butfirstlet’sdefinetheword“scientist”.Whatisascientist?Ascientistisapersonwhoworksinscience,tryingtounderstandhowtheuniverseorotherthingswork.Scientistscanworkindifferentareasofscience.Herearesomeexamples:Thosethatstudyphysicsarephysicists.Thosethatstudychemistryarechemists.Thosethatstudybiologyarebiologists.StepIIAskthestudentstotrythequizandfindoutwhoknowsthemost.T:Therearesomegreatscientificachievementsthathavechangedtheworld.Canyounamesomeofthem?Whatkindofroledotheyplayinthefieldofscience?Dotheseachievementshaveanythingincommon?Matchtheinventionswiththeirinventorsbelowbeforeyouanswerallthesequestions.1.Archimedes,AncientGreek(287-212BC),amathematician.2.CharlesDarwin,Britain(1808-1882).ThenameofthebookisOriginofSpecies.3.ThomasNewcomen,British(1663-1729),aninventorofsteamengine.4.GregorMendel,Czech,abotanistandgeneticist.5.MarieCurie,PolishandFrench,achemistandphysicist.6.ThomasEdison,American,aninventor.7.LeonardodaVinci,Italian,anartist.8.SirHumphryDavy,British,aninventorandchemist.29.ZhangHeng,ancientChina,aninventor.10.StepperHawking,British,aphysicist.II.Pre-readingStepIGetthestudentstodiscussthequestionsonpage1withtheirpartners.Thenaskthestudentstoreporttheirwork.Encouragethestudentstoexpresstheirdifferentopinions.1.Whatdoyouknowaboutinfectiousdiseases?Infectiousdiseasescanbespreadtootherpeople.Theyhaveanunknowncauseandneedpublichealthcaretosolvethem.Peoplemaybeexposedtoinfectiousdisease,somayanimals,suchasbirdflu，AIDS,SARSareinfectiousdiseases.Infectiousdiseasesaredifficulttocure.2.Whatdoyouknowaboutcholera?CholeraistheillnesscausedbyabacteriumcalledVibriocholerae.Itinfectspeople’sintestines(肠),causingdiarrheaandlegcramps(抽筋).Themostcommoncauseofcholeraisbysomeoneeatingfoodordrinkingwaterthathasbeencontaminated(污染)withthebacteria.Choleracanbemild(不严重的)orevenwithoutimmediatesymptoms(症状),butaseverecasecanleadtodeathwithoutimmediatelytreatment.3.Doyouknowhowtoproveanewideainscientificresearch?Anybodymightcomeoutwithanewidea.Buthowdoweproveitinscientificresearch?Therearesevenstagesinexamininganewideainscientificresearch.Andtheycanbeputinthefollowingorder.Whatorderwouldyouputthesevenin?Justguess.Findaproblem→Makeupaquestion→Thinkofamethod→Collectresults→Analysetheresults→Drawaconclusion→RepeatifnecessaryIII.ReadingStepIPre-reading1.DoyouknowJohnSnow?JohnSnowisawell-knowndoctorinthe19thcenturyinLondonandhedefeated“KingCholera”.2.Doyouknowwhatkindofdiseaseischolera?Itisakindofterriblediseasecausedbydrinkingdirtywateranditcausedalotofdeathsintheoldtimesanditwasverydifficulttodefeat.LLeett’’ssggeettttookknnoowwhhoowwDDrr..JJoohhnnSSnnoowwddeeffeeaatteedd““KKiinnggCChhoolleerraa””iinn11885544iinnLLoonnddoonniinntthhiissrreeaaddiinnggppaassssaaggee::StepIISkimming找教案“KingCholera“?(JohnSnow)2.Whathappenedin1854?(CholeraoutbreakhitLondon.)3.Howmanypeoplediedin10days?(500)4.WhyistherenodeathatNo.20and21BroadStreetaswellasatNo.8and9CambridgeStreet?3(ThesefamilieshadnotdrunkthewaterfromtheBroadStreetpump.)(Optional)Skimthepassageandfindtheinformationtocompletetheformbelow.WhoWhenWhatHowResultJohnSnow1854helpingordinarypeopleexposedtocholeraExaminingthesourceofallwatersuppliesandfindingnewmethodsofdealingwithpollutedwaster“KingCholera”defeatedStepIIIScanningReadthepassageandnumbertheseeventsintheorderthattheyhappened.2JohnSnowbegantotesttwotheories.1AnoutbreakofcholerahitLondonin1854.4JohnSnowmarkedthedeathsonamap.7Heannouncedthatthewatercarriedthedisease.3JohnSnowinvestigatedtwostreetswheretheoutbreakwasverysevere.8KingCholerawasdefeated.5Hefoundthatmostofthedeathswerenearawaterpump.6Hehadthehandleremovedfromthewaterpump.StepIVMainideaandcorrectstage找教案“KingCholera”ParagraphStagesGeneralideas1Findaproblem:Whatcausethecholera?Thecausesofcholera2Makeupaquestion:Whichisright?Thecorrectorpossibletheory3Thinkofamethod:TesttwotheoryCollectdataonwherepeoplewereillanddiedandwheretheygottheirwater4Collectresults:MarkthedeathPlotinformationonamaptofindoutwherepeoplediedordidnotdie5Analyzetheresults:FindtheresourceofthewaterLookintothewatertoseeifthatisthecauseoftheillness6FindsupportingevidenceFindotherevidencestoconfirmhisconclusion7DrawaconclusionThepolluteddirtysourceofdrinkingwaterwastoblameforthecauseoftheLondoncholeraStepVGroupdiscussion4Answerthequestions(Finishexercise2onPag