高二 Unit13 教案〔Period 2〕
高二 Unit13 教案〔Period 2〕
The Second Period
Teaching Aims:
1.Learn and master the following words and phras:
cube,property,range,medium,relatively,dissolve,pure,relationship,mass,float,absorb,bottom,all the way,that is,add…to,mix with,take advantage of,manage to do
2.Improve the students’ reading ability.
3.Enable the students to realize that it is important to protect the water on our pla.
Teaching Important Points:
1.Improve the students’ reading ability.
2.Master the following phras:
all the way,that is,mix with,take advantage of,manage to do
Teaching Difficult Point:
How to make the students understand the reading passage 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 they’ve learned better.
4.Careful reading to get the detailed information in the text.
Teaching Aids:
1.the multimedia
2.the blackboard
Teaching Procedures:
CStep Ⅰ 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.
T:OK,can you give me the reason why it is important?
S2:Water can be ud to wash clothing,to made electricity,to water the farm and so on.Of cour,every day we must drink enough water.So water is very important.
T:Anything el?
S3:I know something about water.For exle,from the experiments we made yesterday,I know vegetable oil can’t be dissolved by water.
CStep Ⅱ Pre-reading and Reading
T:OK.Thank you for your answers to my questions.As we all know,we can’t live without water.But do you know what makes water so important to all the living things?
Ss:No,we don’t know.
T:Maybe we can get the answer to the question after reading the article for today.Before you read,first let’s learn the new words and phras in the passage.
(Teacher deals with the new words with the whole class.)
T:Now plea read the passage quickly to get the general idea and try to u the following structures to make six questions.
(Teacher us 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 pared to?
5.How does ______ work?
6.What are some exles of ______?
(Teacher gives students five minutes to finish the fast reading and making questions.Five minutes later,teacher asks some students to write their questions on the blackboard.)
1.What are the properties of water?
2.What does the earth look like?
3.What are different parts of the ocean?
4.What can the ocean be pared to?
5.How does the special air-conditioner—the ocean work?
6.What are some exles of species 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,let’s read the passage carefully to get more information about water.While you are reading,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:
Property
What is it?
What is it good for?
Chemical structure
