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(共42张PPT)
Unit 4 The Earth
Saihanba: turning desert into the forest
阅读拓展与跨学科项目课
（沪教版2024）七年级
上
Learning objectives
1
Lead in
Pre-reading
3
While-reading
Post-reading
5
Cross-curricular connection
Project
7
Summary
2
4
6
8
Assessment
9
Homework
1
0
1
Learning objectives
3. Understand the difficulties met during the renovation process of Saihanba and the final results.
1. Learn the importance of air and wind.
2. Learn how Saihanba transformed from a desert into an oasis.
After learning this lesson, you can:
4. Use the “fact file” to present a place faced or still facing a serious environmental problem and how to solve it.
What is it
It has no smell.
It has no taste.
But when the wind blows,
You feel it on your face.
It’s air.
GUESS
2
Lead in
When air flows over a warm surface,
it heats up and rises.
This leaves room for cooler air to flow in.
The flowing air is _______.
wind
2
Lead in
What is it
GUESS
Air surrounds the Earth.
All living things on Earth need air to survive.
空气环绕着地球。
地球上所有的生物都需要空气才能生存。
3
Cross-curricular connection
Let’s read the poem about air and the text about wind.
3
Cross-curricular connection
3
Cross-curricular connection
Rhymes /ra mz/ 押韵
What’s the feature of a poem
Rules: It rhymes with the words at the end of the second and fourth line in the verse.
What’s air like
Air is useful is our life.
What does “We need air to survive” mean
What can we learn from the poem
3
Cross-curricular connection
3
Cross-curricular connection
Why can clouds move
What does “We need air to survive” mean
What do you know about wind energy
(1) Air has no __________ and no __________.
(2) A kite or a plane ______________ to stay in the sky.
(3)“We need air to survive” means “air _______ us _______”.
(4) The wind moves clouds across the sky, and sometimes
these clouds bring in __________.
(5) A(n) _____________can tell us where the wind is blowing from.
(6) __________ produce electricity for us.
smell
taste
rides on the air
keeps
alive
rain
weathercock
Windmills
Complete the sentences below.
3
Cross-curricular connection
Can you imagine a desert can turn into a forest
4
Pre-reading
the location of Saihanba
the meaning of Saihanba
the coverage of trees
the area of grassland
the number and types of plants and animals there
the disappearance of habitats
people’s cutting down forests
3
Pre-reading
What are likely to be mentioned in the video
Prediction:
Watch a video clip about Saihanba and learn about this beautiful forest park.
Watch a video clip about Saihanba and match the numbers with the things you have got.
5
Post-reading
Match the numbers with the things you have got.
5
Post-reading
1. the forest park a. nearly 1,000
2. grassland b. 80%
3. trees c. 94,000 hectares
4. plant species d. 15,000 hectares
5. animal species e. 70,000 hectares
6. forest coverage f. more than 600
7. a forest belt g. over 50 km long and 17 km wide
4
Pre-reading
It means “beautiful highland”.
Thanks to the newly-planted forest, animals such as the red deer have returned to Saihanba.
The forest now protects the plain from sand and dust storms and also stops the flow of cold, dry air from the north.
Watch the video again and answer the questions below.
What does the Mongolian word “Saihanba” mean
Why have animals, such as the red deer, returned to Saihanba
How does Saihanba help the environment now
What led to Saihanba’s great changes
What can we do to protect forests
4
Pre-reading
5
While-reading
Read the article quickly and Summarize the main idea of each paragraph with subheadings and key words.
Actions and challenges
Efforts and achievements
History and problems
Read Part 1 and answer the questions.
5
While-reading
How did Saihanba become a desert
There were forest fires and wars, and people cut down many trees. Saihanba slowly turned into a desert.
emperor / emp r (r)/ n. the ruler of an empire
hunt /h nt/ v. to chase wild animals or birds in order to catch or kill them for food, sport or to make money
war /w (r)/ n. a situation in which two or more countries or groups of people fight against each other over a period of time
5
While-reading
Read Part 2 and answer the questions.
solution /s lu n/ n. a way of solving a problem or dealing with a difficult situation
blow /bl / v. When a wind or breeze blows, the air moves.
sandstorm / s ndst m/ n. a storm in a desert in which sand is blown into the air by strong winds
Because the cold and dry weather made it very difficult, and strong winds blew away many young trees.
Why was it difficult to turn the desert into a forest
5
While-reading
The forest helps provide the capital with clean water, and there are fewer sandstorms in the Beijing area now.
How does the forest improve the environment in the Beijing area
generation / d en re n/ n. the average time in which children grow up, become adults and have children of their own
Read Part 3 and answer the questions.
5
While-reading
3
2
4
in the 1800s
the world’s biggest man-made forest
in 1962
three generations
emperors hunted there
slowly turned into a desert
the first tree planters arrived
1
in the early 1960s
scientis tried to find a solution
5
6
for hundreds of years
it is green again
today
work hard
Scan the text and fill in the missing information. Pay attention to the time and events.
6
Post-reading
Have you been to Saihanba Find out more about the place online.
Exploring more
(1) The family lived in the village for five ___________ before they moved to Beijing.
(2) This is a difficult problem, but I am sure we can find a ________.
(3) The strong wind ___________ her hat, and it landed in the lake.
(4) ___________ are very common in the Sahara Desert.
(5) Killer whales usually ___________ seals and sea lions for food.
Complete the sentences with the words and the phrase below.
generations
solution
blew away
Sandstorms
hunt
6
Post-reading
6
Post-reading
Why are forests important
What can we do to protect them
Discuss the questions.
Suppose you are a reporter for the school newspaper. The newspaper is going to carry a special feature on Saihanba Spirits. You are going to interview some relevant people about their experiences.
S1: news reporter
S2: director of the forest farm
S3: early pioneer
S4: director of research institute
6
Post-reading
Thanks to the tree planters’ great efforts, Saihanba has once again turned green. Are there any other places that faced, or still face, serious problems Let’s do some research and make a fact file.
7
Project
Making a fact file about Earth protection
A fact file is a knowledge database or reference to various facts.
7
Project
What is a fact file
What is a fact file
It is a short report containing all the most important information on one subject.
This subject can be a thing, a place, or even a person.
It includes accurate information, different sections, a large, clear title, and some pictures.
Some subheadings
A title
Attractive pictures
A fact file includes:
7
Project
7
Project
Step 1
Search online for basic information about it.
Choose one place that interests you.
Discuss what you want to include in your fact file.
Work in groups.
You may refer to the following questions.
Why do you care about this place
What kinds of plants and animals are there in this place
What serious problems did / does it face
What are the causes of these problems
7
Project
a Actions and challenges
b Efforts and achievements
c History and problems
Paragraph 1
Paragraph 2
Paragraph 3
7
Project
Review and learn.
Learn from the text. Think what can you include in your fact file
alternatives
location
current
situation
problems
causes
achievements
place/
area
solutions
7
Project
Writing skills:
Topic sentence & supporting details
7
Project
Step 2
Learn the structure.
Search online and find out the facts on your spidergram.
Give details about each fact.
Combine all the details and make them a complete fact file.
7
Project
Step 3
Arrange your information on a large poster with pictures or make presentation slides. Then present it to the class.
Present it to the class.
In-Class Presentation
Presentation in groups
Group discussion
Peer feedback
Teacher’s comments
7
Project
Checklist Excellent Good Poor
1. The fact file has a clear structure. It includes title, subheadings and pictures.
2. The language features are appropriate. It uses the simple present tense, complete and clear sentences, and correct facts.
3. The writing skills are evident. It has topic sentences and supporting details, and it lists numbers.
4. I presented the fact file to the class confidently. I explained the fact file clearly, answered any questions, and engaged the audience with visual aids.
1. 在……的北部 ______________________
2. 数以百计 ______________________
3. 变成 ______________________
4. 可怕的沙尘暴 ______________________
5. 在20世纪60年代早期 ______________________
6. 一群 ______________________
7. 找到一个解决办法 ______________________
8. 在……的中间 ______________________
in the north of ...
hundreds of
turn into
terrible sandstorms
in the early 1960s
a group of
find a solution
in the middle of ...
8
Summary
Important phrases and sentences:
9. 到达 ______________________
10. 吹走 ______________________
11. 和……一样冷 ______________________
12. 三代人 ______________________
13. 多亏，由于 ______________________
14. 人造森林 ______________________
15. 国家级自然保护区 ______________________
16. 改善环境 ______________________
arrive in
blow away
as cold as ...
three generations
thanks to
man-made forests
national nature reserves
improve the environment
8
Summary
Important phrases and sentences:
Self-assessment Marks
I can understand the poem about air and the article about wind. 1 2 3 4 5
I can understand how Saihanba turned into a forest. 1 2 3 4 5
I can understand the success of Saihanba has improved the environment. 1 2 3 4 5
I can collaborate with peers for Project. 1 2 3 4 5
9
Assessment
Homework
1. Finish the exercise on P53-54 of Book B
2. Retell the story of Saihanba.
3. In groups, search for information online or watch movies to learn more about reports on Saihanba. And then make a poster about Saihanba.
1
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