英语微课教学设计.docx
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英语微课教学设计.docx
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英语微课教学设计
英语微课教学设计
一.教材分析
1.教学内容
本单元的中心话题是“克隆”,学生通过讨论和阅读有关克隆的内容,了解克隆的含义、克隆的技术发展、克隆对人类带来的好处以及人类对克隆这一问题的争议。
阅读部分介绍了植物与动物克隆的区别、多莉羊的诞生与死亡以及由此引发的争论。
帮助学生进一步认识克隆的意义在于解决医学上的难题,为人类服务。
1.教材处理
本科结合教材的实际对教材内容、编排顺序等进行了调整、删除和补充,把阅读前、阅读中和阅读后三部分有机整和起来。
(1)导入新颖,激发兴趣。
“读前阶段”通过图片导入的形式,激活学生大脑中的图式。
同时,结合标题预测,使学生对即将阅读的内容有一定的预测,激发阅读兴趣。
(2)循序渐进、创意安排。
“读中阶段”引导学生进行语篇的整体感知,了解课文的概况;培养学生同义转换及归纳概括的能力。
(3)适度拓展、开发思维。
“读后阶段”拓展学生的发散性思维,在训练学生阅读技能的基础上了解克隆这门生物技术以及有关的争议。
二.teachinggoals(教学目标)
1.target language(目标语言)
a.importantwordsandexpressions
clone,commercial,producer,undertake,arbitrary,object,forbid,accumulate,castdown,objectto,themedia,infavourof
b.importantsentences
1)butatlastthedeterminationandpatienceofthescientistspaidoffin1996withabreakthrough---thecloningofdollythesheep.
2)altogetherdollylivedsixandahalfyears,halfthelengthofthelifeoftheoriginalsheep.
3)thefactthatsheseemedtodevelopnormallywasveryencouraging.
4)thencamethedisturbingnewsthatdollyhadbecomeseriouslyill.
1.abilitygoals (能力目标)
enablethestudentstodescribecloning:
whatistheadvantagesofcloning?
whatistheproblemsordangersofcloning?
whatisyouropinionofcloning?
1.learningabilitygoals(学能目标)
helpthestudentslearnhowtodescribecloning.
三.teachingimportantpoints (教学重点)
howtodescribecloning.
四.teachingdifficult (教学难点)
helpthestudentsanalyzethewritingtechniquesofthearticle.
五.teachingmethods(教学方法)
skimming,task-basedmethodanddebatemethod.
六.teachingaids(教具准备)
arecorder,aprojectorandsomeslides.
teachingprocedures&ways
stepⅰ lead-in
[设计意图]
导入部分由两个步骤组成:
1.首先让学生观看有关克隆动物和植物的图片。
通过图片,学生们立刻领悟了本课的主题,并带着兴趣开始观看。
2.学生在体验中产生探究的兴趣后,为了启发学生思考,设计了四个问题,以激发学生的思维。
teacher:
inpairs,lookatthesepicturesanddiscusswhichonesarenaturalclonesandwhichonesareman-made.thinkabouthowtheydiffer.
student:
Ithinkthetwinsandastrawberryplantarenaturalclones;thedollysheepandgrowingnewplantsareman-made.
afterseveralminutes,teacherasksomequestionsandletstudentsanswerthesequestions.
teacher:
1.dollythesheep.It’sthemostfamoussheepintheworld.doyouknowhowdollyisdifferentfromothersheep?
student:
shewasclonedwhiletheotherswerebornnaturally.itisthecopyofanothersheep.
teacher:
2. whatcanyouseeinthepicture?
student:
Icanseeastrawberryplantproducingrunnersinanaturalformofcloning.
teacher:
3.whocutthestemofftheplant?
student:
agardener.andthegardenerisgoingtoputitintoapottoproduceanotherplant.heisactuallymakingacopyoftheplant.
teacher:
4.whatdoyouknowabouttwins?
student:
therearetwinsofthesamesexandthoseofdifferentsexes.thetwinshereareidenticalinsexandappearanceandaregoodexamplesofnaturalclones.theycarrythesamegeneticinformation.thefertilizedegghassplitintotwowhileinsidethemother,andsoproducedtwoidenticalhumanbabies.
step ⅱ pre-reading
[设计意图]
通过阅读文章标题,引导学生对课文内容进行预测,调动学生已有的背景知识,使其产生阅读的兴趣,快速进入阅读状态。
然后让学生通过快速阅读来验证自己的预测,使自身处于一种主动认知的状态。
beforeclass,askthestudentstosearchforsomeinformationaboutthistopic.nowshowmyquestionsonthescreen,andthenletthemdiscusswitheachother.
questionsaboutcloning:
1.whatisaclone?
2.howisacloneproduced?
3.whatbenefitscanhumansgainfromcloning?
4.whatproblemsmayarisewhenhumansarecloned?
suggestanswers:
1.acloneisananimalorplantproducednaturallyorartificiallyfromthecellsofanotheranimalorplantandisexactlythesameasit.
2.thecloningofplantsissimpleandrelativityeasy.itcanbedonebytakingcuttings(man-madecloning)orlettingtheplantproduceitsownrunners(naturalcloning).thecloningofanimalsismorecomplicated.itwasnotachieveduntil1996andisfullyexplainedinthefirstreading.
3.1)medicalcloningcanhelpcureseriousillnessesthatruinone’squalityoflife(suchasparkinson’sdisease帕金森症oralzheimer’sdisease老年痴呆症).
2)itcanhelpinfertilepeoplehavebabies.
4.1)peoplemaywanttoclonethemselvessotheycanliveforever.
2)peoplemaywanttoclonedeadchildren.
3)peoplemaywanttoclonetheirfavoritepets.
step ⅲ while-reading
teacher:
nowlet’slistentothetape.theniwillgiveyou20minutestoreadthispassageagain.whilereading,youshouldfinishthefollowingthreetasks.
task1 summarizethemainideaofeachparagraph.
[设计意图]
学生通过略读本文,快速找出每段的主题句,从整体上把握文章内容,不但了解此类型文章的篇章结构,学习此类型文章的写作,而且便于下一步查读。
para 1.cloningisawayofmakinganexactcopyofanotheranimalandplant.
para 2.cloninghastwomajoruses.
para 3.thebirthanddeathofdolly.
para 4.theeffectofdolly.
para 5. itisforbiddentoclonehumanbeings.
task2 readthetextcarefullyandfillintheblanks.
[设计意图]
学生个人先通过查读,快速找到特定信息,然后小组组员之间交流各自的答案,有疑义的地方,经过讨论,最终确定答案。
这不仅让学生了解文章的具体内容,而且培养学生阅读的能力和互帮互助的团队合作精神。
definition
◆ cloningisawayofmaking anexactcopy ofanotheranimalandplant.
majorusesofcloning
◆ gardenersuseitto produce commercialquantitiesofplants.
◆ itisvaluableforresearchonnewplantspeciesandfor medical researchonanimals.
aboutdollythesheep
◆ encouragingnews:
dollyseemedtodevelop normally.
◆disturbingnews:
dollylivedonlysixandahalfyears,halfthelengthofthelifeofthe original sheep,becauseofseriousillnesseswhichweremoreappropriatetoa mucholderanimal.
.
differentopinionsoncloning
◆evilleadershopedtoclone themselves toattaintheirambitions.
◆religiousleadersraised moral questions.
◆somegovernments forbade researchintohumancloningbutothercountrieslikechinaandtheuk,continuedtoaccumulateoftheabundant evidence medicalaidthatcloningcouldprovide.
task3 choosethebestanswer.
[设计意图]
在阅读的过程中,让学生结合文章对这些问题进行思考。
一方面,可以培养学生的综合阅读能力,另一方面,加强学生对文章的进一步理解。
1).themainideaofthetextis____
a.animalcloningisveryvaluableandcanbenefittheworld.
b.animalcloningcouldbemisusedbybadpeoplesoitmustbeforbidden
c.animalcloningiswelldevelopedbecausedollythesheepwasborn.
d. animalcloningraisedargumentsandscientistsarenotsureaboutitsfuture.
2).________isusedintheprocedureforcloningdollythesheep.
a.thenucleusofsheepa
b.thesomaticcellofsheepa
c. thenucleusofsheepb
d.theembryoofsheepc
3).thecloningofdollythesheepsucceededbecause____. a.itseasiertocloneasheepthanotheranimals b. thescientistsweredeterminedandworkedhardwithpatience
c.thescientistswererewardedandgotlotsofmoney
d.manyotherattemptstoclonemammalsfailed
4).thelambisthecloneofthecellfromsheepbecause_____. a.itprovidestheeggcell b.itgivesbirthtothelamb c. itprovidesthenucleus d.itisafemalesheep
5).dollythesheep-----------.
a.lookedexactlylikethesheepthatprovidestheegg
b.wastheexactcopyofthesheepthatprovidesthenucleus
c.lookedlikethesheepthatgavebirthtoit
d.hadthecharacteristicsofallthreesheep
6).itcanbeinferredfromthepassagethataclonedanimal----------.
a.usuallylivesaslongastheoriginalone
b.usuallyliveslongerthantheoriginalone
c. usuallydiesearlierthantheoriginalone
d.isusuallyashealthyastheoriginalone
7).whichofthefollowingiswrong?
a.clonedpeoplewouldliveforever.
b.clonedpeoplemaybekilledatwillformedicalaid.
c.awomanwouldhavedifficultyrecognizingherrealhusband.
d. menwilldieoutbecauseawomancangivebirthtoababywithoutahusband
8).thesheepthatdonatedthesomaticcellmostprobablylived____years. a.3 b.6 c.12 d. 13
9).whichofthefollowingisnotanadvantageofcloning?
a.cloningcanbeusedformedicalpurposes.
b.largequantitiesoffoodcanbeproducedbycloning.
c. famouspersonswhohavepassedawaycanbecloned.
d.cloningcanhelpkeepanimalsfrombecomingextinct.
10).inthesecondparagraph,theword“straightforward”means____.
a.uncomplicated b.honest c.frank d.difficult
step ⅳ post-reading
[设计意图]
学生已经通过略读、查读和细读,抓住了文章脉络,理解了文章内容。
在此基础上,要求更深一步理解文章,因此设计了几道习题,进一步培养和考察学生的阅读理解能力。
exercise1thefollowingstatementsareaboutcloning.readthemanddecideiftheyaretrueorfalse.writetheletter“t”ifthestatementistrue.write“f”ifitisfalse.
1).cloningmeansmakingacopyofananimaloraplant. (f)
2).gardenerscanmakealotofmoneybycloningplants. (t)
3).cloninganimalsisascomplicatedascloningplants. (f)
4).dollythesheepwasthefirstsuccessfulcloneofamammal. (t)
5).naturalcloneshappeninanimalsaswellasinplants. (t)
exercise2 readthepassageagainandanswerthesequestions.
1).whatarethetwomajorusesofcloning?
2).whyisiteasiertomakecommercialplantclonesthananimalclones?
3).whatwasthefirstclonefromanadultanimal?
atwhatagedidthisclonedie?
4).whyiscloningcontroversialinsomecountries?
step ⅴ languagepoints
[设计意图]
使学生理解和掌握一些重点词汇的用法,进一步培养使用英语语言的能力,并加深对文章的理解。
1.identical adj.
① (常与with连用) 完全相同的
eg. thesetwodesignsarealmostidentical.
myopinionisidenticalwithhis.
②还有“同一的,同样的”的意思
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