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1、The Second PeriodTeaching Aims:1.Learn and master the following words and phrases:cube,property,range,medium,relatively,dissolve,pure,relationship,mass,float,absorb,bottom,all the way,that is,addto,mix with,take advantage of,manage to do2.Improve the students reading ability.3.Enable the students to
2、 realize that it is important to protect the water on our planet.Teaching Important Points:1.Improve the students reading ability.2.Master the following phrases:all the way,that is,mix with,take advantage of,manage to doTeaching Difficult Point:How to make the students understand the reading passage
3、 better.Teaching Methods:1.Discussion before reading to make the students interested in what they will learn.2.Fast reading to get a general idea of the text.3.Discussion after reading to make students understand what theyve learned better.4.Careful reading to get the detailed information in the tex
4、t.Teaching Aids:1.the multimedia2.the blackboardTeaching Procedures:CStep Greetings and Revision(Greet the whole class as usual.)T:Yesterday we learnt something about water.Now who can tell me what you learned yesterday?S1:I learned that water is very important to all the living things on the earth.
5、T:OK,can you give me the reason why it is important?S2:Water can be used to wash clothing,to made electricity,to water the farm and so on.Of course,every day we must drink enough water.So water is very important.T:Anything else?S3:I know something about water.For example,from the experiments we made
6、 yesterday,I know vegetable oil cant be dissolved by water.CStep Pre-reading and ReadingT:OK.Thank you for your answers to my questions.As we all know,we cant live without water.But do you know what makes water so important to all the living things?Ss:No,we dont know.T:Maybe we can get the answer to
7、 the question after reading the article for today.Before you read,first lets learn the new words and phrases in the passage.(Teacher deals with the new words with the whole class.)T:Now please read the passage quickly to get the general idea and try to use the following structures to make six questi
8、ons.(Teacher uses multimedia to show the structures on the screen.)1.What is/are _?2.What does _ look like?3.What are different parts of _?4.What can _ be compared to?5.How does _ work?6.What are some examples of _?(Teacher gives students five minutes to finish the fast reading and making questions.
9、Five minutes later,teacher asks some students to write their questions on the blackboard.)1.What arethe properties of water?2.What doesthe earthlook like?3.What are different parts ofthe ocean?4.What canthe oceanbe compared to?5.How doesthe special air-conditionerthe oceanwork?6.What are some exampl
10、es ofspecies in the ocean?T:Well done.Who can tell me the general idea of the text?S4:The passage mainly tells us it is water that makes the ocean so important to all the living things in the world.T:Good work.Next,lets read the passage carefully to get more information about water.While you are rea
11、ding,try to finish the chart in Post-reading on Page 21 and find out the answers to the questions on the blackboard.(Teacher gives students enough time to read the text and collects their information for the chart.)Suggested answers:PropertyWhat is it?What is it good for?Chemical structureEvery wate
12、r molecule is made up of two hydrogen atoms and one oxygen atom.It is good for the living things in the ocean to absorb the nutrients easily.DensityThe density of pure water is 1 000 kg/m3,meaning that one cubic metre of water weighs one thousand kilogram.It is good for marine organisms to take adva
13、ntage of the density of water.Heat capacityHeat capacity is the amount of energy it takes to raise the temperature of a substance one degree centigrade.It is good for the earth to keep the temperature steady.T:Very good.What about the questions on the blackboard?S5:I think I can answer the first one
14、.The answer is that the properties of water are chemical structure,salinity density,heat capacity and ocean motion.S6:In my opinion,the answer to the fourth question is that the ocean can be compared to a great place to live in.T:Do you agree with them?Ss:Yes.T:What about other questions?S7:I think
15、plankton,sharks and whales are examples of species in the ocean.S8:The answer to the second one is that the earth looks like an ocean planet.T:You are quite right.Any volunteers?S9:Dear teacher.Can you tell us the meaning of the special air-conditionerthe ocean?T:Maybe it means that there are some similarities between air-conditioner and the ocean.S9:Thank you.I got it.T:Then,who can answer the question?S10:Because the ocean can keep the temperature of the earth steady,some students compare the ocean to a special air-conditioning.I think the ocean keeps the temperature of
