Unit5LookintoScience
Lesson29DNA-TheStoryofYou
◆
ThestudentsofGrade9havemasteredcertainvocabularies,expressionsandstructures.Theyalsohavetheabilitiesofself-teachingandworkingingroups.MostofthemarewillingtoexpresstheiropinionsinEnglish.
2.AnalysisofTeachingContent
Lesson28isthefifthlessoninUnit5,Book5.ThisunitfocusonthesubjectLookintoscience,alsoteachthestudentssomethingaboutscience.Studentscaresaboutthesubjectbecauseitisclosetoeveryone.Lesson28mainlytalksaboutDNA,ittellusthecharacterandfunctionofDNA,alsounderstandourbody.Weareuniqueintheworld.
◆教学目标
1.Tomasterthewords:blueprint,general,complex,twins,pattern,identify,berelatedto,exceptfor.
2.Tomasterthephrases:notonly…butalso,exceptfor,berelatedto,billionsof.
Improvethestudents’abilityofspeaking,listening,readingandwriting.UnderstandthearticlesaboutDNA.
Knowmoreaboutthenature,knowmoreaboutourbody.Youareuniqueintheworld.
Tomasterthecompoundsentences.
TomastertheuseofDNA.
◆课前准备
◆
Taperecorder,Multimedia
◆教学过程
Step1.Warm-up
Freetalk:(showthepictureofDNA,tellstudentsDNAisshortfordeoxyribonucleicacid.)
Thinkaboutit!
1.WhatdoyouknowaboutDNA?
2.WhatcanscientistsdowithDNA?
Step2.Presentation
1.Freetalk:
(1)Whereisitinourbody?(ShowsomepicturesofDNA.)
(2)WhatsthefunctionofDNA?(Showsomepicturesoftwins.)
2.Explainthenewwords.
3.Readthelessonandanswerthequestions:
(1)Whatisablueprint?
(2)Whichismorecomplex,buildingalivingthingorbuildingahouse?
(3)DosometwinshavethesameDNA?
(4)IsitpossibletochangeyourDNA?
(5)WhoseDNAisrelatedtoyours?
4.Checktheanswersandunderlinethekeywords.
5.Listenandfollowtothetape.
6.Explainthelanguagepoints:
between与among
between用于两者之间,among一般指三者或三者以上。
JacksitsbetweenTimandBob.
Jack坐在Tim和Bob之间。
Shewasamongthecrowd.
她处在人群中。
use…todosth.用……做某事
Sheisusingaknifetocutvegetables.
她正用小刀切蔬菜。
use的形容词是useful.
Isthefridgeveryuseful?
这台冰箱很有用吗?
too与either
too与either都表示“也”,其区别是too用于肯定句,表示“也”;either用于否定句,表示“也不”。他们通常都位于句末,其前用逗号隔开。
Hehasababybrother,too.
他也有个小弟弟。
Hedoesn’thaveaneraser,either.
他也没有橡皮。
own的用法adj.自己的(用在所有格后面,加强语气)
Hemakesallhisownnotebooks.
她所有的衣服都是自己做的。
vt.有;拥有
Whoownsthecar?
这辆汽车是谁的?
ownern.所有人;物主
Sheistheownerofthehouse.
她是这座房子的主人。
exceptfor除……以外,只是
Davidisagoodmanexceptforhottemper.
大卫除了脾气暴躁以外,他是个好人。
Theclassroomisniceexceptfordirtyonthefloor.
教室除了地板脏以外都很好。
Step3.Practice
1.Readthelessonbythemselves.
2.Fillintheblankswiththephrasesintheboxonpage75.
ingeneral,exceptfor,notonly…butalso,
relatedto,evenif,thesame…as…
(1)Yourhomeworkisquitegood__________afewspellingmistakes.
(2)_________theyoung_________theoldlikepopmusic.
(3)Kate’shairis_____________colour_________hersister’s.
(4)________________,womenlivelongerthanmen.
(5)_____________manydifficultiesremain,wecanovercomethem.
(6)Iswealth______________happiness?
3.Checktheanswers.
4.Askstudents:DoyouthinkDNAcanchangeeachother?ReadagainandCompletethepassagewiththesentencesinthebox.
ChangingDNA
DoyouknowDNAcanbechanged?Haveyoueverseenapigwithadog’sbody?Ofcoursenot!Pigsanddogscan’thavebabiestogether._________Butnow,scientistscandoit.ScientistscantakeDNAfromonekindofanimalandputitintoanotherkindofanimal.TheycandesignnewplantsbycombiningtheDNAofotherplants. _____________Somescientistsareworried.TheysayweneedtoknowmoreaboutDNAbeforewestartchangingit.________Butwhatiftheplantsarebadforhumans,too?
A.TheirDNAcan’tcombine.
B.Wecanmakeplantsthatarebadforpests.
C.TheycanevencombinetheDNAofaplantandananimal.
5.Checktheanswers.
Step4.Consolidation
Groupwork:
IsitagoodideatochangetheDNAofthefoodweeat?
Somepeoplesaydoingthismakesourfoodbetter.Othersthinkit’stoodangerous.
1.Discusstheideaofyours.
2.Writedownyourideas.
3.Reportyouideas.
Step5Homework
1.Listenandread.
2.Finishexercisesofthislesson.
Unit5LookintoScience
Lesson26KeeptheCandleBurning
◆
ThestudentsofGrade9havemasteredcertainvocabularies,expressionsandstructures.Theyalsohavetheabilitiesofself-teachingandworkingingroups.MostofthemarewillingtoexpresstheiropinionsinEnglish.
2.AnalysisofTeachingContent
Lesson26isthesecondlessoninUnit5,Book5.ThisunitfocusonthesubjectLookintoscience,alsoteachthestudentssomethingaboutscience.Studentscaresaboutthesubjectbecauseitisclosetoeveryone.Lesson26mainlytalksaboutlearntodoanotherexperiment.
◆教学目标
1.Tomasterthewords:match,light,burn,useup,candleholder,shallow,oxygen,one-fifth.
2.Tomastertheexpressions:doanexperiment,fill…with,cover…with,turn…upsidedown,be(not)sure…
Improvethestudents’abilityofspeaking,listening,readingandwriting.Doandexpresstheexperiment.
Studentscanenjoythepleasureofliterature.
Theusageofprefer.
Writeacompositiontodescribeaninterestingexperiment.
◆课前准备
◆
Taperecorder,Multimedia
◆教学过程
Step1.Warm-up
Freetalk:
Thinkaboutit!
1.Doyouthinkscienceisinteresting?Whyorwhynot?
2.NameoneortwofamousChinesescientists.Whatdoyouknowaboutthem?
Step2.Presentation
1.Doanexperiment.
2.Showthepictureandtellstudentstheexperiment:KeeptheCandleBurning.
3.Introducesomethingweneedintheexperiment,meanwhilelearnthenewwords.
4.Guess:Whatdowedotheexperiment?
5.Readthetextandfillintheblanksonpage69.
Let’sdotheexperimenttogether!Putthecandleinthecandleholder.Putthecandleholderonthedish.Fillthedishhalffullwithwater.Lightthecandlewitha_______oralighter.Whatcanyousee?Thecandleisburning.________thecandleburnfortwoorthreeminutes.Thencarefullyputthejaroverituntilthetopofthejarrestsonthedish.Asthecandleburns,it_______theoxygenintheair.Whenthecandlestops________,ithasusedupalltheoxygenintheair.Thewaterinsidethejar_______andfillsabout________ofthejar.Thisisbecauseaboutonefifthoftheairismadeupofoxygen.
6.Checktheanswers.
7.Guess:Whatishappening?Listentothetapeandanswerthequestion.
8.Listenandfollowtothetape.
9.Explaintheexpressionoffractions:
(1)分数由分子和分母两部分构成。用英语表达时,分子用基数词,分母用序数词。
(2)如果分子为1,则分母的序数词是单数形式,如果分子大于1,则分母的序数词用复数形式。
=one(a)half或onesecond(one-second)
=one(a)quarter或one-quarter
Step3.Practice
1.Practicethetextingroups.
2.Finishtheexerciseonpage69.
3.Retelltheexperiment.
Step4.Consolidation
1.Groupwork:(Teacherasksstudentspreparesomethingtheyneedinexperimentsingroups.)
Dotheexperimentingroups.
Readabouttheexperimentinthislesson.Withagroupofclassmates,practicetheexperiment.Doyourexperimentinfrontoftheclass.Don’tforgetthefollowingthings:
(1)First,describeyourexperiment.
(2)Second,asktheclasswhattheythinkwillhappen.
(3)Third,dotheexperiment.
(4)Finally,asktheclassiftheresultiswhattheyexpected.
2.Showtheexperiments.
3.Getaresult.
4.Writedowntheprogressintheexperiment.
Step5Homework
1.Listenandread.
2.Finishexercisesofthislesson.
做好教案课件是老师上好课的前提,是时候写教案课件了。我们制定教案课件工作计划,才能更好地安排接下来的工作!有没有好的范文是适合教案课件?下面是由小编为大家整理的“九年级英语上册Unit5LookintoScienceLesson25Let’sDoanExperiment教案新版冀教版”,欢迎您参考,希望对您有所助益!
Unit5LookintoScience
Lesson25Let’sDoanExperiment
◆
ThestudentsofGrade9havemasteredcertainvocabularies,expressionsandstructures.Theyalsohavetheabilitiesofself-teachingandworkingingroups.MostofthemarewillingtoexpresstheiropinionsinEnglish.
2.AnalysisofTeachingContent
◆教学目标Lesson25isthefirstlessoninUnit5,Book5.ThisunitfocusonthesubjectLookintoScience,alsoteachthestudentssomethingaboutscience.Studentscaresaboutthesubjectbecauseitisclosetoeveryone.Lesson25mainlytalksabouttheprogressoftheexperiment,aswellasteachthestudentshowtodotheexperiments.
1.Tomasterthewords:science,experiment,fill,prove,scientific,method.
2.Tomastertheexpressions:doanexperiment,fill…with,cover…with,turn…upsidedown,be(not)sure…
Improvethestudents’abilityofspeaking,listening,readingandwriting.Doandexpresstheexperiment.
Studentscanenjoythepleasureofliterature.
Theusageofprefer.
Teachstudentslovescience.
◆课前准备
◆
Taperecorder,Multimedia
◆教学过程
Step1.Warm-up
Freetalk:
(1)Doyoulikescience?
(2)Whatkindsofexperimentshaveyoudoneinscienceclass?
(3)Ifyouholdajarthatisfilledwithwaterupsidedown,whatwillhappen?
Step2.Presentation
1.Explain“upsidedown”.
Teachershowthepictureaboutupsidedown.
2.Explainthenewwordswiththepictures.
3.Listentothetapeandanswerthequestions:
(1)WhatwillBraindo?
(2)WhydoesDannysaytheyshoulddothisexperimentoutside?
4.Checktheanswers.
5.Languagepoints.
Ithink…:“我认为……”,其后可接that引导的宾语从句。在使用时要注意,否定主句,反问从句。
getwet意为“变湿”。后接形容词作表语。
pourout:“倒出,使流出,涌出”。 pour…into…:“把……倒进……”。
besureof:“确信;对……有把握”
puton:“穿上”,为“动词+副词”构成的短语。
“Itis+形容词+enoughtodosth.”“做某事是足够……的”。
=too…to…
=so…that…。
concludefrom意为“从……推断,从……中得出”。
find,findout,discover,invent
(1)find意为“找到,发现”,强调“找”的结果,也可指偶然发现、碰到,其后可接名词、复合结构或that从句。
(2)findout指“弄清楚,查明”。着重表示通过调查、分析、思考等得出结果。
(3)discover意为“发现”,指发现已存在但不为人所知的事物。
(4)invent意为“发明”,指发明原来不存在的东西。
Step3.Practice
1.Listenandfollowtothetape.
2.Readthedialoguewiththefollowingquestions.
(1)WhydoesDannysaytheyshoulddothisexperimentoutside?
(2)WhatwillBriando?
(3)DoesDannyhavethesametheoryasBrian’s?
3.Checktheanswers.
4.Readthelessonandanswerthequestions.
(1)WheredoesDannythinktheyshoulddotheexperiment?
(2)Whatkeepsthewaterinthejar?
(3)IsJennysureofhertheory?Howdoyouknow?
(4)WhydoesDannyputonhisraincoat?
(5)WhatdoesDannyconclude?
5.Checktheanswers.
6.Readtheexperiment.Putthesentenceinthecorrectorderonpage67.
7.Checktheanswers.
Step4.Consolidation
1.Groupwork:Trytodotheexperimentinthislessonyourself.
Whathappenswhenyouuselesswater,morewater,wetcardboard,ordifferentkindsandsizesofjars?
2.Reportyourexperimentandretelltheprocess.
3.Summarytheexperiment.Howtodoanexperiment.
4.Listenandsingasong,Whatisscience.
Step5Homework
1.Listenandread.
2.Finishexercisesofthislesson.
文章来源:http://m.jab88.com/j/85385.html
更多