Unit 3 Environmental Protection Opening Page & Reading and Thinking 课件（18张PPT）

(共18张PPT)
Climate Change Requires the World’s Attention
Reading and Thinking:
Climate Change Requires the World’s Attention
By the end of the lesson, you will be able to:
1.know about the climate change and clarify the structure of the passage;
2.learn about causes, consequences and solutions of the climate change and enhance the awareness of environmental protection;
3.voice personal opinions about how to deal with climate change.
4.analyse the language features and writing purpose.
Where do you think this photo was taken
What is happening in the photo
What does this photo make you think of
Activity 1: Lead in
（图片来源：人教版教科书选择性必修第三册）
It was taken in either the Arctic or Antarctica, as those places have large ice sheets like this.
The iceberg is melting and breaking up.
The photo makes me think of the global warming.
Activity 1: Lead in
What types of extreme weather and natural disasters do you know
A. storm B. fire
C. tsunami D. flood
E. heatwave F. volcanic eruption
G. drought H....
Do you think climate change is the result of human activity
Activity 2: Discussing the graph and photo
（图片来源：人教版教科书选择性必修第三册）
A graph
A news photo
1.What can you say about the graph and the photo
2.What’s the possible relationshiop between the temperature and the bear
The earth is becoming warmer and warmer. The polar bear is dead
Read paragraph 1 and 2 to figure out what is described about the graph and the photo.
Activity 2: Discussing the graph and photo
A graph
There is little doubt that Earth is getting warmer and warner.
a dramatic change
What does the writer say about the graph
Activity 2: Discussing the graph and photo
“skin and bones”
the bear appeared to have starved and died.
A news photo
the bear couldn’t hunt seals as before
low sea-ice levels
climate change
an alarming case
What does the writer say about the photo
Activity 2: Discussing the graph and photo
（图片来源：人教版教科书选择性必修第三册）
A graph
A news photo
The seriousness of global warming is better illustrated by a real case.
Activity 3: Clarify the structure
Skim the passage and use some key words to clarify the structure of the text.
paragraph key words
1
2
3
4
5
problem
an example
causes
consequences
solutions
Activity 4: Clarify the causes(para.3)
Draw a diagram describing how the greenhouse effect works.
（图片来源：人教版教科书选择性必修第三册）
enter
release back
trap
heat
Activity 4: Clarify the causes(para.3)
Read paragraph 3 and fill in the table.
A key Climate Process Type
Function
Similarity Difference
“natural”greenhouse effect
“man-made”greenhouse effect
keep Earth’s climate warm and habitable; sustain life
cause Earth’s surface temperature to rise quickly
Greenhouse gases in the atmosphere, such as methane and carbon dioxide, trap some of the heat from the sun.
important and necessary
huge amounts of extra greenhouse gases produced by burning fossil fuels trap more heat energy and cause Earth’s surface temperature to rise quickly
Activity 5: Understand the consequences(para.4)
What are the consequences of global temperature rise Draw a diagram to present the consequences.
rising sea level
consequences
extreme weather
coat human lives
natural disasters
melting ice
heatwaves
rainstorms
cause serious damage
Activity 6: Seek solutions(para.5)
What solutions are suggested in the last paragraph Draw a diagram to present the solutions.
government
individuals
solutions
seize opportunities to educate about global warming
restrict the amount of carbon dioxide our lifestyles produce
make policies
take appropriate actions and measures
What will you do to help？
walk more, drive less
take public transport
recycle paper/plastic bags
purchase environmentally-friendly things
appeal to the fellows to take actions
Activity7: Thinking
1.Is the tone of the text subjective or objective Why
The way presented information
E.g. there is little doubt that… Earth is getting warmer and warmer
A dead polar bear found
How the polar bear died
Two common meanings of the green house effect
Extremely weather and natural disasters worldwide
Warming trend will probably continue
Extreme rainstorm and heatwaves
A news photo
An expert said…
Climate scientists
Strong and comprehensive evidence
Climate scientists
News report
Quote professional voices
Activity7: Thinking
2. What is the author’s purpose of writing this passage
The author’s purpose is to arouse our awareness of the problem of the rising temperature and appeal to us to take appropriate actions to deal with climate change.
Activity8:Assignment
假如你是李华，你非常关心目前的全球变暖问题。请你写一封倡议信给学校的同学们，提倡“低碳生活”(low-carbon life)。要点如下：
1）说明全球变暖问题，简述其原因；
2）提出具体措施；
3）发出倡议。
Dear fellow students,
Recent years has witnessed numerous extreme weather events and the increasing number of disasters, which could be part of a new trend related to human-driven global warming.
In fact, unnecessary carbon dioxide emissions resulting mainly from burning fossil fuels account for the occurrence of global warming. However, it might even be astonishing that every human activity is related directly or indirectly to carbon release, like driving private vehicles, turning air conditioners on and using household appliances, etc. Therefore, as individuals, in addition to restricting the amount of carbon dioxide by changing our lifestyle, it is equally important to raise our awareness of energy conservation and emission reduction.
I am here again to appeal to all of us to take actions to live a low-carbon life, for which every individual effort counts a lot.
Li Hua
Earth provides enough to satisfy every man’s needs, but not every man’s greed.
— Mohandas K. Gandhi