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1、TheThe properties properties of of waterwaterHuiHua Middle School HuiHua Middle School English is a bridge to the world.Made byMade by CuiZhiCuiZhi2021/8/11 星期三1说课稿结构说课稿结构Part one:The teaching materialPart one:The teaching materialParttwo:Teachingmethods,learning Parttwo:Teachingmethods,learning gui
2、dance and aids guidance and aids Part three:Teaching proceduresPart three:Teaching procedures:Part four:Comments and evaluationPart four:Comments and evaluation 2021/8/11 星期三2Part one:The teaching materialPart one:The teaching materialA.contents and status of the teaching materialA.contents and stat
3、us of the teaching material Unit13isaboutwater,soalltheteachingmaterialschosenare about water.This lesson describes the properties ofwater,suchasitschemicalstructure,density,heatcapacityetc.Asareadingpassage,itplaysanimportantpartinthisunit,forreadingisoneofthefourskillsthatthestudentsshould have.In
4、 this reading passage,the teacher shouldhelpthestudentsgetsomeknowledgeaboutthepropertiesofwater.Meanwhile,the studentsarerequiredtoimprovetheir reading skills by skimming,scanning and doingdifferentkindsofexercises2021/8/11 星期三31.knowledgegoalswords:cube,property,range,medium,relatively,dissolve,pu
5、re,relationship,mass,absorb,bottom,phrases:alltheway,thatis,addto,mixwith,takeadvantangeof,managetodosentences:1)butthewaythewatermoleculeisformedgiveswateritsuniqueproperties.2)Withtherightkindofbody,itispossibletofloataround in the ocean and let the water do thework.B.teaching aimsB.teaching aims
6、and demandsand demands2021/8/11 星期三4B.teaching aims and demandsB.teaching aims and demands2.abilitygoals1)improvethestudentsreadingability2)teachthestudentshowtograspthemainideaofthetext3.emotionalgoalsEnablethestudentstorealizethatitisimportanttoprotectandsavethewateronourplanet.2021/8/11 星期三5c.tea
7、ching important pointsc.teaching important points 1)developthestudentsreadingskills,eg,how to find the topic sentence ofeachparagraph.2)enablethestudentstograsptheabovevocabulariesandsentencepatterns3)improvethestudentsawarenessofsavingwater2021/8/11 星期三6D.teaching difficult points Howtomakethestude
8、ntsunderstandthereadingpassagebetter2021/8/11 星期三7Part two:Teaching methods,learning guidance and aids A.teachingmethods1.multimediamethodtoarousetheSsinterests2.skimming,scanning,task-basedmethodtoimpovethestudentsreadingskills3.student-centered method to motivate the studentsactiveness4.success-ex
9、periencing method to encourage the Ssandmakethemfeelthejoyofsuccess2021/8/11 星期三8B.studying waysB.studying ways learningthroughcooperationlearningthroughcommunicationlearningthroughpractice2021/8/11 星期三9C.teaching aids the multimedia,the recorder.2021/8/11 星期三10Part three Part three Teaching procedu
10、res:Teaching procedures:Step1.lead-in(4minutes)Show some pictures to let the students saysomethingaboutwater.and askthestudentstotake a little quiz about water(to arouse theSsinterests and draw their attention to thefollowingtext)2021/8/11 星期三112021/8/11 星期三122021/8/11 星期三132021/8/11 星期三142021/8/11
11、星期三15The earth revision442021/8/11 星期三16The usage of waterentertainment 2021/8/11 星期三17Water can be used for agriculture2021/8/11 星期三18The dalian of chinaThe dalian of chinatransport2021/8/11 星期三192021/8/11 星期三20Quiztime:1.1.Up to _ of the human body is water.Up to _ of the human body is water.2.2.A
12、.60%B.65%C.70%A.60%B.65%C.70%3.3.2.About _ of the earth surface is covered by 2.About _ of the earth surface is covered by water.water.4.4.A.66.6%B.75%C.85%A.66.6%B.75%C.85%5.5.3.The water molecule is made up of _ atom(s)3.The water molecule is made up of _ atom(s)6.6.and _ atom(s).and _ atom(s).7.7
13、.A.two hydrogen;one oxygen A.two hydrogen;one oxygen 8.8.B.one hydrogen;one oxygen B.one hydrogen;one oxygen 9.9.C.two hydrogen;two oxygen C.two hydrogen;two oxygen 10.10.2021/8/11 星期三21step2 pre-reading(step2 pre-reading(2m)2m)Askthestudentstoreadthetitleofthe text and say some properties orcharact
14、eristicsofwater2021/8/11 星期三22What properties or characteristics do you know about water?colorlesstastelesshavingnofixedshapethreeformsfeelingwetkeepinglevel?absorbingheatproperties 2021/8/11 星期三23step3 while-readingskimming,scanning,task-based(25m)1.skimming:trytofindthetopicsentenceofeachparagragh
15、para1.introduction:thepropertiesofwatermaketheoceanagreatplacetolive.Para2.thechemicalstructureofwatermakesitaexcellentmediumforlifePara3 the salinity of sea water affects both itsweightandfreeningpoint.2021/8/11 星期三24Para4marineanimalsandplantstakeadvantageofthedensityofwater.Para5 the heat capacit
16、y of water keeps thetempertureoftheoceansteady,makingitasafeandcomfortabalehabitat.Para6.oceanmotionaddsenergytothemarineecosystemsandmovesnutrientsaround.1.skimming2021/8/11 星期三252.scanning,asktheSstoscanthetexttofinishtureorfalsequestions2021/8/11 星期三26 scanning:the properties of waterscanning:the
17、 properties of water1.Water is a liquid at room temperature,and it has a relatively high freezing point.2.The reason why water can dissolve most substances on earth is that water has high heat capacity.3.Like all the other substances,water gets smaller when it freezes.4.Pure water has a higher freez
18、ing point and lighter than salt water.5.The salinity of the earths oceans is about 3.5%.6.When water freezes,its density increases.7.T FF TTF True or false2021/8/11 星期三272.abilitygoals1)improvethethestudentsreadingability2)teachthestudentshowtograspthemainideaofthetext3.emotionalgoalsEnablethestuden
19、tstorealizethatitisimportanttoprotectandsavethewateronourplanet.CarefulReading2021/8/11 星期三28Comprehension(para1)uu About _years ago,life on our About _years ago,life on our planet began in the deep blue seas.planet began in the deep blue seas.uu _of the living space on earth is in _of the living sp
20、ace on earth is in the ocean.the ocean.uu In the Ocean there are about _ In the Ocean there are about _ species.species.uuLife in the ocean ranges from _to Life in the ocean ranges from _to _3 billion3 billion99%99%5 million5 millionplanktongiants like sharks and whales.2021/8/11 星期三29Waters unique
21、chemical structureWater is polar.(slightly slightly positivepositivepositivepositive&negativenegativenegativenegative)u Water is liquid at room temperature.u Water has a relatively high freezing point.Function:It can break down both solids and gases.It can provide nutrients for marine lives Comprehe
22、nsion(para2)Chemical structure:Chemical structure:2021/8/11 星期三30Salinity Salinity Salinityofseawater:seawater(saltwater)=_+_mixedwith_salinityofseawateraffects:_and_dissolved solids dissolved gasespure water weight freezing point3535Comprehension(para3)2021/8/11 星期三31如果有了适宜的体型结构如果有了适宜的体型结构,他们就能让水帮助
23、他们在海他们就能让水帮助他们在海洋里浮游洋里浮游.S e n t e n c e u n d e r s t a n d i n g:Withtherightkindofbody,itispossibletofloataroundintheoceanandletthewaterdothework.1,000kg/m3Comprehension(Para4)DensityDensity Density of pure water:What is density:Density is the relationship between mass and volume and is measured
24、in kilogrammes per cubic metre.Why can the man float on sea water?2021/8/11 星期三32HeatcapacityComprehension(Para5)Howdoesthewaterworktokeepthetemperatureoftheearthsteady?Concept:Heat capacity is the amount of energy it takes to raise t h e t e m p e r a t u r e o f a s u b s t a n c e b y o n e degre
25、e centigrade.The water in the oceans keeps the temperature of the earth steady by absorbing and giving off heat.2021/8/11 星期三33Q1:Howdoesthewaterintheoceanmove?DensewatersinksandlessdensewaterDensewatersinksandlessdensewaterispushedtothesurface.ispushedtothesurface.Comprehension(Para6)OceanmotionQ2:
26、Whatarethefunctionsoftheoceanmotion?Itaddsenergytothemarineecosystemsandmovesnutrientsaround.2021/8/11 星期三34 play the tape for the Ss to listen andfollow,meanwhile,theteachergoesamongtheSsand correct any mistake the Ss made inpronunciation,stressandintonation.4.listening and reading aloud4.listening
27、 and reading aloud 2021/8/11 星期三355.group work5.group workTheteachermakethestudentsworkingroupstoconcludewhatarethepropertiesofwater,andthenoneofthemreporttheirwork;finallytheteachershowwhattheysaidontheBb2021/8/11 星期三36What are the properties of water?Water is polar.Water is liquid at room temperat
28、ure.Water has a relatively high freezing point.Water has density of 1,000 kg/m3.Water has high heat capacity.2021/8/11 星期三37step4.Application(5m)Makethestudentstoapplywhattheylearntinthebooktoreality.2021/8/11 星期三38Thecoastalareasareoftenneithertoohotnortoocold.Wecangetalotofnutrientsinthesoup.Whatp
29、ropertiesofwaterarethesephenomenarelatedto?Applicationheat capacitychemical structuresalinitydensityOcean motion2021/8/11 星期三39watch a flash(a drop of water)and have adiscussiontoimprovethestudentsawarenessofsavingwater.step5.discussion(7m )step5.discussion(7m )2021/8/11 星期三40ComprehensionWatch a fl
30、asha drop of waterWhat do you know from the flash?What should we do from now on?2021/8/11 星期三41 1.review the passage and prepare forlanguagestudyonpage212.invesigatethethemeareyoufriendlytowater?Step6.Step6.Homework(2m)(2m)2021/8/11 星期三42HowdoyouusewaterAre you friendly to water?1.Doyouturn-offtheta
31、pwhilebrushingyourteeth?A.AlwaysB.sometimesC.never22.Howlongdoesittakeyoutotakeashower?A.8minutesB.15minutesC.30minutes3.Doyouhaveleakingtapsinyourhouse?A.alwaysB.sometimesC.neverB.4.Doyouthrowrubbishintolake/river/sea?C.alwaysB.sometimesC.neverD.5.Doesyourmother/fatheremptycookingoilinthekitchensin
32、k(水槽水槽)?1.A.AlwaysB.sometimesC.never2021/8/11 星期三43 Part ments and evaluationPart ments and evaluationTeachersshouldemployproperteachingmethodsandtechniques to satisfy the Ssneeds.They are in greatneed of instructions on how to be a successfullanguage learners.My lesson plan is based on thisprinciple.Multimedia teaching method will certainlyarouse the Ssinterest and skimming,scanning,task-basedmethodproveeffectivetoimpovethestudentsreadingskills.Meanwhile,Iusesuccess-experiencingmethodtoencouragetheSsandmakethemfeelthejoyofsuccess.2021/8/11 星期三442021/8/11 星期三452021/8/11 星期三46