Module 5 A Lesson in a Lab vocabulary and speaking
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| 名称 | Module 5 A Lesson in a Lab vocabulary and speaking |  | |
| 格式 | rar | ||
| 文件大小 | 1.4MB | ||
| 资源类型 | 教案 | ||
| 版本资源 | 外研版 | ||
| 科目 | 英语 | ||
| 更新时间 | 2010-12-02 10:29:00 | ||
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课件39张PPT。Module 5
A Lesson in a Lab oxygenelectricityelectricalironsteelmetal a test tube
a burner /lamp
They are all equipment in the lab.
Can you find these in a chemistry lab?a metal
oxygen
react reaction
reactingAn oxide is the production of the reaction with oxygen After the reaction _______is produced oxideWhen a metal is heated, it expands( )
When it cools, it contracts ( )becomes larger becomes smallerliquid substance oxygen electricity mixture oxide rust aim conclusion stage expand contract boil react equipment balance ordinary partial Exercises: Match the words with their definitions:
1.ordinary a form of energy carried by wires
2.aim normal or not special
3.partial a gas living things need
4.electricity purpose
5.oxygen not complete or total
Fill in the blanks:
1.A______of things consists of several different things together.
2.A____of an activity is one part of it.
3.Most________have three states :gas, solid and _______.
4.If you heat water to 100℃ it_____.
5.Rust (铁锈) is a(n) ______.A: mixture B:oxide
6.”Contract” is opposite to ______in meaning.
mixturestagesubstancesliquidboilsoxideexpand41523boil expand liquid mixture oxide stage substanceHow much do you know about general science
Page 411a 2a 3a 4a 5b 6b 7b liquidsolid gas 0°C100°C
Can you understand the sentences ? 1 Two –thirds of the earth’s surface is water .
２ 50% of the students passed the exam.Study the table and try to find out how to read fractions :How to read decimals:Conclusion: It’s nearly the same as the Chinese way .
1.The number after the point should be read one by one .
2.however,zero can either be read or not.point one ,zero point onetwo point fiveeighteen point two seventhree point seven nine eight ten point two three（zero )point three seven eight
Practice: decide the relation among them ? o.5 10%
1/10 2.5 50%
? a quarter
? 0.1 25%
2 ? three quarters 75%be equal to, equal , the same as , as much as How much money do you have ? 1000,000,000billion 10亿million 百万
thousand 千Can you read them? 1000，000，0002,000
32,000
6,865，000
2,674，057,000
57，120，500，60810 billionmillionthousandHomework:
1.words and expressions of this module
2. Preview the reading and vocabulary Put the stages in the correct order.
Decide what the aim
of the experiment is.
The correct order :
b—f—a—g—e—c—dThe aim of the experiment:
To write a secret message
Equipment:
a lemon a small container a pen or a brush some clean paper a candle some matches squeeze a lemon
put juice in a containerStages: dip the pen in the juice write a message blow to dry the ink
message becomes invisible light a candle
heat the paper
near the flamemessage appears
Result:Listen and write down words and expressions of sequence :
First, squeeze…
_____, take your pen and…
_____, write…
_____, blow…
_____, light…
_____,heat …Listen and write down words and expressions of sequence :
First, squeeze
, take your pen and…
, write…
, blow…
, light…
,heat … Next Then After that Next Finally
squeeze a lemon
put juice in a container dip pen in juice write message blow
dry the ink light a candle
heat paper flame
message appears invisible ink Key words and expressions:
Speaking
First,…
Next, …
Then,…
After that,…
Next,…
Finally, … First, squeeze the lemon and
pour the juice into a container.
Next, take your pen and dip it into the lemon juice . Then, write your message in large letters on a clean sheet of white writing paper. After that, blow on the paper to dry the lemon juice. Next, light a candle with the matches. Finally, heat the paper near the candle flame. The message will gradually appear on the paper. Let’s do the experiment!Tips:
*write one or two words
*exchange your message
after it is invisible
*be careful not to burn your
paperConclusion:
The message appears on the paper when you heat it because the lemon juice reacts with oxygen in the air. This reaction produces a brown coloured oxide which you can see. Thank you
very much!
A Lesson in a Lab oxygenelectricityelectricalironsteelmetal a test tube
a burner /lamp
They are all equipment in the lab.
Can you find these in a chemistry lab?a metal
oxygen
react reaction
reactingAn oxide is the production of the reaction with oxygen After the reaction _______is produced oxideWhen a metal is heated, it expands( )
When it cools, it contracts ( )becomes larger becomes smallerliquid substance oxygen electricity mixture oxide rust aim conclusion stage expand contract boil react equipment balance ordinary partial Exercises: Match the words with their definitions:
1.ordinary a form of energy carried by wires
2.aim normal or not special
3.partial a gas living things need
4.electricity purpose
5.oxygen not complete or total
Fill in the blanks:
1.A______of things consists of several different things together.
2.A____of an activity is one part of it.
3.Most________have three states :gas, solid and _______.
4.If you heat water to 100℃ it_____.
5.Rust (铁锈) is a(n) ______.A: mixture B:oxide
6.”Contract” is opposite to ______in meaning.
mixturestagesubstancesliquidboilsoxideexpand41523boil expand liquid mixture oxide stage substanceHow much do you know about general science
Page 411a 2a 3a 4a 5b 6b 7b liquidsolid gas 0°C100°C
Can you understand the sentences ? 1 Two –thirds of the earth’s surface is water .
２ 50% of the students passed the exam.Study the table and try to find out how to read fractions :How to read decimals:Conclusion: It’s nearly the same as the Chinese way .
1.The number after the point should be read one by one .
2.however,zero can either be read or not.point one ,zero point onetwo point fiveeighteen point two seventhree point seven nine eight ten point two three（zero )point three seven eight
Practice: decide the relation among them ? o.5 10%
1/10 2.5 50%
? a quarter
? 0.1 25%
2 ? three quarters 75%be equal to, equal , the same as , as much as How much money do you have ? 1000,000,000billion 10亿million 百万
thousand 千Can you read them? 1000，000，0002,000
32,000
6,865，000
2,674，057,000
57，120，500，60810 billionmillionthousandHomework:
1.words and expressions of this module
2. Preview the reading and vocabulary Put the stages in the correct order.
Decide what the aim
of the experiment is.
The correct order :
b—f—a—g—e—c—dThe aim of the experiment:
To write a secret message
Equipment:
a lemon a small container a pen or a brush some clean paper a candle some matches squeeze a lemon
put juice in a containerStages: dip the pen in the juice write a message blow to dry the ink
message becomes invisible light a candle
heat the paper
near the flamemessage appears
Result:Listen and write down words and expressions of sequence :
First, squeeze…
_____, take your pen and…
_____, write…
_____, blow…
_____, light…
_____,heat …Listen and write down words and expressions of sequence :
First, squeeze
, take your pen and…
, write…
, blow…
, light…
,heat … Next Then After that Next Finally
squeeze a lemon
put juice in a container dip pen in juice write message blow
dry the ink light a candle
heat paper flame
message appears invisible ink Key words and expressions:
Speaking
First,…
Next, …
Then,…
After that,…
Next,…
Finally, … First, squeeze the lemon and
pour the juice into a container.
Next, take your pen and dip it into the lemon juice . Then, write your message in large letters on a clean sheet of white writing paper. After that, blow on the paper to dry the lemon juice. Next, light a candle with the matches. Finally, heat the paper near the candle flame. The message will gradually appear on the paper. Let’s do the experiment!Tips:
*write one or two words
*exchange your message
after it is invisible
*be careful not to burn your
paperConclusion:
The message appears on the paper when you heat it because the lemon juice reacts with oxygen in the air. This reaction produces a brown coloured oxide which you can see. Thank you
very much!