Unit 3 The world of Science Developing ideas 英語(yǔ)外研版（2019）必修第三冊(cè)

TheWorldofScienceLead-in導(dǎo)入AmericanFoundingFatherdrafttheDeclarationofIndependenceascientistBenjaminFranklin

Franklin’sExperiment:HowmuchIsTrue?Learningobjectives學(xué)習(xí)目標(biāo)Bytheendoftheclass,wewilldevelopourLanguagecompetencebygettingthemainideaofthepassageandwritinganexperimentreport.LearningabilitybyworkingwithothersandexplainingphysicalphenomenoninEnglish.ThinkingqualitybythinkingabouthowtoimproveFranklin’sexperiment,knowingthequalitiesofscientistsandtryingtoseethingscritically.While-readingⅠ.Fast-reading:readforstructureLookthroughthepassagequicklyandfinishTaskI.readforstructure讀結(jié)構(gòu)TaskⅠpara.1Theauthor'sviewonFranklin'sexperiment:para.___Thedetailsof

thestory.para.___Thegeneral

public'sview

onthestory.Para.____Scientists'

view

onthestoryand

suchstories.para.__Theauthor'sconclusionThestorymaybefictioninsteadoffact.234&56While-readingⅡ.Careful-reading:readfordetailsLookthroughpara.2-5andfinishTaskⅡ&Ⅲ.

ThekitelightningexperimentAimTheexperimentwasdesignedto①M(fèi)aterialsFranklinprepared②____________________todothisexperiment.Procedures③ConclusionAftertheexperiment,hedrewtheconclusionthat④readfordetails讀細(xì)節(jié)TaskⅡknowiflightningwasreallyproducedbyelectricityorsomethingelse.akite,astringandakey

Heraisedthekitewithapieceofstringtiedtoit.Ametalkeywasattchedtothestring.Aflashoflighteninghitthekite,andelectricitywasconductedthroughthestringtothekey.Franklintouchedthekeywithhisfingerandgotanelectricshock.lighteningwasaformofelectricity.1ReadandVisualize1234ReadandVisualizeThegeneralpublic’sviewonFranklin’sstoryPeoplewereamazedbyhisbraveryandhisscientificapproachtolookingforthetruth.Healsotaughtusthatscientificexperimentsareimportantinordertoestanblishthetruth.Scientists’viewonFranklin’sstoryItisnotentirelytrue.readfordetails讀細(xì)節(jié)TaskⅢtouchedthe

keywasconductedthroughthestringraisedthekitehitthekiteWhichoneistrueorflase?touchedthe

key物理小貼士

physical

knowledge閃電的的平均電流是3萬(wàn)安培，最大電流可達(dá)30萬(wàn)安培。閃電發(fā)生時(shí)的瞬間最高溫度可以達(dá)2.7萬(wàn)攝氏度，是太陽(yáng)表面溫度的4倍多。touchedthe

keygotanelectricshockwasconductedthroughthestringraisedthekitehitthekiteWhichoneistrueorflase?touchedthe

keyNot100%true?Canyousuggestanyimprovementsinmeasuringelectricityusingmoderntechnology?Thegeneralpublic’sviewonFranklin’sstoryPeoplewereamazedbyhisbraveryandhisscientificapproachtolookingforthetruth.Healsotaughtusthatscientificexperimentsareimportantinordertoestanblishthetruth.Scientists’viewonFranklin’sstoryNeitherthestorynorthedetailsoftheexperimentareentirelytrue.Readforideas讀思維TaskⅣReadpara.6aloudandfinishtaskⅣ.1.Whydoscientistsoftenquestionacceptedideas?2.Whydoordinarypeoplepreferfictionwhilescientistsfavourfacts?3.Comparedwithordinarypeople,whatqualitiesagreatscientistshouldhave?4.whatisyouropinionaboutthestatement“weshouldnotalwaysbelieveeverythingwereadorhear—evenifitisagreatstory”?questionpresentationCommentQuestion1Group8(黑板)Question2Group7(黑板)Question3Group6(黑板)Question4Group4(黑板)GroupactivityGroup2Group3Post-reading

課后輸出Herearethreephysicalphenomena,whichoneisafact?1.Apaperfishinwaterwon'tswimlikearealfish.2.Aircanpushaneggintoanarrow-mouthedbottle.3.salt+sugar+water=blackink.“Inscience,factsshouldbeprovedbyexperimentsandresearch,...”Result:Theeggissqueezedintothebottle.Reason:theeffectofairpressure

氣壓MagicbottleAimTheexperimentisdesignedto________________materialsWeprepared_________________todothisexperiment.proceduresFirst,...Then,..Afterafewminutes,...justatthesametime,...Asaresult,Conclusionanexperimentreport

寫(xiě)作Herearethreepropositions(命題),whichoneistrue?1.Apaperfishinwaterwon'tswimlikearealfish.2.Aircanpushawholeeggintoanarrow-mouthedbottle.3.salt+sugar+water=snow.“Inscience,factsshouldbeprovedbyexperimentsandresearch,...”Itisimportanttobeopentonewideas,itisequallyimportanttoviewtheminacriticalway.Importantwordstoyou升華Beafreethinkeranddon’taccepteverythingyouhearastruth.Becriticalandevaluatewhatyoube