Unit 5 Revealing nature Understanding ideas 课件(共36张PPT，内镶嵌2视频)-外研版（2019）选择性必修第一册
文档属性
| 名称 | Unit 5 Revealing nature Understanding ideas 课件(共36张PPT，内镶嵌2视频)-外研版（2019）选择性必修第一册 |
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| 格式 | pptx | ||
| 文件大小 | 58.6MB | ||
| 资源类型 | 教案 | ||
| 版本资源 | 外研版（2019） | ||
| 科目 | 英语 | ||
| 更新时间 | 2026-01-03 21:39:44 | ||
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文档简介
(共36张PPT)
B4U5 Revealing nature
A Journey of Discovery
(Understanding ideas)
What species do you
recognise in the picture
An evolutionary tree
algae(藻类）
moss (苔藓）
fern(蕨类）
gymnosperms(裸子植物）
angiosperm(被子植物）
paramecium
(草履虫-单细胞生物）
jellyfish
水母腔肠动物
flatworm
(扁形动物）
earthworm
(蚯蚓-环节动物）
snail蜗牛
(软体动物）
starfish
(棘皮动物）
crab螃蟹
(节肢动物）
fish
turtle海龟
(爬行动物）
frog青蛙
(两栖动物)
bird
zebra斑马(哺乳动物）
human(哺乳动物）
Plants
Animals
Look at the evolutionary tree and answer the questions.
Evolve
lower forms of life
higher forms of life
Lead-in
An evolutionary tree
water
land
For living places
For life levels
2. What factors can cause the process of evolution
The ever-changing environment;
population immigration;
genetic mutation (基因突变);
natural selection;
…
Who is he
Do you know his famous work
What is it about
Watch and answer
Charles Darwin and his Theory of Evolution
Charles Darwin (1809 –1882) was an English geologist and naturalist. In his famous book On the Origin of Species, Darwin proposed the theory that organisms (individual life forms) evolve extremely slowly. He stated that the organisms that were better suited to their environment would survive and pass on their favourable characteristics to the next generation, while the less suitable organisms would gradually die out. He called this process “natural selection”.
Who made this discovery
What is the discovery
How did he make the discovery
Charles Robert Darwin
The theory of evolution
The Origin of Species
Pre-reading
Match the parts with main ideas.
Fast reading
Part 1 (Paras. 1-2)
Part 2 (Paras. 3-5)
Part 3 (Paras. 6)
Part 4 (Paras. 7)
A. The remark about On the Origin of Species.
B. Darwin's new theory about evolution.
C. The new discoveries during the journey.
D. Darwin answered the call and began his journey.
Para_____
The structure
2-5
The text is organized in order of______ .
Para___
Para _____
time
Before
the journey
During
the journey
Decide what type of essay it is
It is a narrative essay.
Fast reading
After
the journey
1
6-7
Read for the structure
Para.1
Para.2
Para.3
Para.4
Para.5
Para.6
Para.7
Introduction
Conclusion
How did he make the discovery
P69 Activity 4
Introduction
On his journey
Generate ideas
Look for more evidence
Develop ideas
Propose a theory
Conclusion
How he made the discovery.
Para.1
Para.7
Para.2
Para.3
Para.4
Para.5
Para.6
1
4
2
3
5
produce
put forward
▲
fascinated
degree
disgrace
evolved
ancestors
Read for the structure
1. What is the function of para. 1
To praise Charles Darwin
To arouse readers’ interests
To introduce Charles Darwin’s achievements
To inform readers of Charles Darwin’s life
Careful-reading
Read Para.1 and choose the correct answer.
2. Which of the following statements about Charles Darwin is True
Darwin wanted to benefit from visiting little-known countries
Darwin quitted medical school due to his lack of money
Darwin’s father was satisfied with Darwin
Darwin’s made a significant scientific discovery thanks to his adventures on the ship Beagle
Introduction
He was not the captain’s _____ ______
He was a ________ to himself and all his family
He was a young man who had left _______ without___________.
first choice
completing his degree
medical school
disgrace
Careful reading
Labels on the young man
In common people’eyes
In captain’eyes
In families’eyes
being despised
2 GENERATE IDEAS
Darwin asked the questions:
How did different species ___________________
__________________________________________________________________________________
come to exist
Maybe animals evolved as they adapted to their changing environments
3 LOOK FOR MORE EVIDENCE
On the Galápagos Islands:
He noticed ________________________________ _________________________________________.
It seemed the beaks ________________________ _________________________________________.
that there was a difference between the
finches on each of the islands
had evolved according to
what food was available on that particular island
The Galapagos Islands
(加拉帕戈斯群岛)在厄瓜多尔西方约1000公里的太平洋上，由14个散布在赤道附近的小岛组成。
Galapagos在西班牙语中的意思就是「乌龟」。此群岛正如其名，岛上有重量超过一百公斤的象龟，使达尔文一行人大为吃惊，另外，还有长达一公尺以上的鬣蜥，这种蜥蜴有住在海岸附近的海生型及住在内陆的陆生型，且两者不属同种。
14种达尔文雀 来源：https:///
These birds are different in the aspect of _______
It is because the___________________________
Beaks
Food available on that particular island
A _________ ancestor
__________ into different species
common
evolve
a theory of evolution
4 DEVELOP IDEAS
Darwin suspected that the finches _______________ ___________________________________________________________________ and it had ______________________________________________.
slowly evolved into many new species
had evolved from a common ancestor, which had arrived on the islands a long time before
5 PROPOSE A THEORY
The Theory of Evolution: living things, including humans, ____________________________________.
had evolved from lower forms of life
Careful reading
1
2
3
various living things in their natural environments and samples of the plants and animals he had collected
very similar to each other
come to exist
Maybe animals evolved as they adapted to their changing environments
that there was a difference between the finches on each of the islands
had evolved according to what food was available on that particular island
Careful reading
4
5
slowly evolved into many new species
had evolved from a common ancestor, which had arrived on the islands a long time before
had evolved from lower forms of life
Read Para.6 and choose the correct answer.
_______ to believe
people were _______
______ to believe
refused
shocked
started
_______ to believe
people were _______
______ to believe
refused
shocked
started
People’s reaction towards the theory
Read Para.7 and choose the correct answer.
Journey on the ___________
Journey to discover _______________
The Theory of Evolution
ship Beagle
A Journey of Discovery
▲
( )1.What made Darwin start to question the existing belief about species
A.The samples he collected.
B.The similar animals he saw.
C.The trip to South America.
D.The captain’s influence.
B
Post-reading
( )2.How was Darwin’s theory of evolution received at first
A.Widely accepted. B.Totally ignored.
C.Met with shock. D.Praised by all.
C
( )3.What can we infer from the article
A.Darwin was not interested in medicine.
B.Darwin and his father always had a bad relationship.
C.Darwin had the idea of evolution before he boarded the Beagle.
D.Darwin spent many years writing On the Origin of Species.
A
Darwin’s interest in various living things made him a great naturalist.
B. Darwin’s journey on the Beagle inspired his Theory of Evolution.
C. Darwin went on a journey to confirm his theory that humans had evolved over time.
4. Choose the main idea of the passage and give your reasons.
1831
the Beagle
started his journey
South America,
asked himself questions
(generated ideas)
1835(developed an idea)
answered the question
1859
published the book
(proposed a theory)
Darwin spent _____ years on his discovery
But spent _____years publishing his Theory of Evolution in 1859
4
24
A ________ Journey of __________Discovery by_______Darwin
tough
important
brave
perseverant
Summary
dangerous
revolutionary
Discussion
How do you think the human species will evolve in the future ( changes in the environment, technology, social structures, and so on.)
One possibility is that humans may continue to evolve physically to better adapt to our changing environment and lifestyles.
Another possibility is that humans may evolve culturally and socially, rather than physically. As we continue to develop new forms of communication and interaction, our social structures and cultural practices may change in ways that shape our evolution.
Ultimately, the future of human evolution is uncertain, and it is impossible to predict exactly how our species will evolve in the coming years and centuries. However, it is clear that our evolution will continue to be shaped by the choices we make and the world we create around us.
Think and share
What good qualities contributed to Darwin's success in scientific exploration
endurance耐力
bravery
…
hard work
perseverance毅力
Self-belief
interest
courage
curiosity
critical thinking
determination
I can succeed in science, the most important thing is the love of science and insisting on long-term exploration.
---Charles Robert Darwin
Darwin’s scientific spirit
Thank you!
B4U5 Revealing nature
A Journey of Discovery
(Understanding ideas)
What species do you
recognise in the picture
An evolutionary tree
algae(藻类）
moss (苔藓）
fern(蕨类）
gymnosperms(裸子植物）
angiosperm(被子植物）
paramecium
(草履虫-单细胞生物）
jellyfish
水母腔肠动物
flatworm
(扁形动物）
earthworm
(蚯蚓-环节动物）
snail蜗牛
(软体动物）
starfish
(棘皮动物）
crab螃蟹
(节肢动物）
fish
turtle海龟
(爬行动物）
frog青蛙
(两栖动物)
bird
zebra斑马(哺乳动物）
human(哺乳动物）
Plants
Animals
Look at the evolutionary tree and answer the questions.
Evolve
lower forms of life
higher forms of life
Lead-in
An evolutionary tree
water
land
For living places
For life levels
2. What factors can cause the process of evolution
The ever-changing environment;
population immigration;
genetic mutation (基因突变);
natural selection;
…
Who is he
Do you know his famous work
What is it about
Watch and answer
Charles Darwin and his Theory of Evolution
Charles Darwin (1809 –1882) was an English geologist and naturalist. In his famous book On the Origin of Species, Darwin proposed the theory that organisms (individual life forms) evolve extremely slowly. He stated that the organisms that were better suited to their environment would survive and pass on their favourable characteristics to the next generation, while the less suitable organisms would gradually die out. He called this process “natural selection”.
Who made this discovery
What is the discovery
How did he make the discovery
Charles Robert Darwin
The theory of evolution
The Origin of Species
Pre-reading
Match the parts with main ideas.
Fast reading
Part 1 (Paras. 1-2)
Part 2 (Paras. 3-5)
Part 3 (Paras. 6)
Part 4 (Paras. 7)
A. The remark about On the Origin of Species.
B. Darwin's new theory about evolution.
C. The new discoveries during the journey.
D. Darwin answered the call and began his journey.
Para_____
The structure
2-5
The text is organized in order of______ .
Para___
Para _____
time
Before
the journey
During
the journey
Decide what type of essay it is
It is a narrative essay.
Fast reading
After
the journey
1
6-7
Read for the structure
Para.1
Para.2
Para.3
Para.4
Para.5
Para.6
Para.7
Introduction
Conclusion
How did he make the discovery
P69 Activity 4
Introduction
On his journey
Generate ideas
Look for more evidence
Develop ideas
Propose a theory
Conclusion
How he made the discovery.
Para.1
Para.7
Para.2
Para.3
Para.4
Para.5
Para.6
1
4
2
3
5
produce
put forward
▲
fascinated
degree
disgrace
evolved
ancestors
Read for the structure
1. What is the function of para. 1
To praise Charles Darwin
To arouse readers’ interests
To introduce Charles Darwin’s achievements
To inform readers of Charles Darwin’s life
Careful-reading
Read Para.1 and choose the correct answer.
2. Which of the following statements about Charles Darwin is True
Darwin wanted to benefit from visiting little-known countries
Darwin quitted medical school due to his lack of money
Darwin’s father was satisfied with Darwin
Darwin’s made a significant scientific discovery thanks to his adventures on the ship Beagle
Introduction
He was not the captain’s _____ ______
He was a ________ to himself and all his family
He was a young man who had left _______ without___________.
first choice
completing his degree
medical school
disgrace
Careful reading
Labels on the young man
In common people’eyes
In captain’eyes
In families’eyes
being despised
2 GENERATE IDEAS
Darwin asked the questions:
How did different species ___________________
__________________________________________________________________________________
come to exist
Maybe animals evolved as they adapted to their changing environments
3 LOOK FOR MORE EVIDENCE
On the Galápagos Islands:
He noticed ________________________________ _________________________________________.
It seemed the beaks ________________________ _________________________________________.
that there was a difference between the
finches on each of the islands
had evolved according to
what food was available on that particular island
The Galapagos Islands
(加拉帕戈斯群岛)在厄瓜多尔西方约1000公里的太平洋上，由14个散布在赤道附近的小岛组成。
Galapagos在西班牙语中的意思就是「乌龟」。此群岛正如其名，岛上有重量超过一百公斤的象龟，使达尔文一行人大为吃惊，另外，还有长达一公尺以上的鬣蜥，这种蜥蜴有住在海岸附近的海生型及住在内陆的陆生型，且两者不属同种。
14种达尔文雀 来源：https:///
These birds are different in the aspect of _______
It is because the___________________________
Beaks
Food available on that particular island
A _________ ancestor
__________ into different species
common
evolve
a theory of evolution
4 DEVELOP IDEAS
Darwin suspected that the finches _______________ ___________________________________________________________________ and it had ______________________________________________.
slowly evolved into many new species
had evolved from a common ancestor, which had arrived on the islands a long time before
5 PROPOSE A THEORY
The Theory of Evolution: living things, including humans, ____________________________________.
had evolved from lower forms of life
Careful reading
1
2
3
various living things in their natural environments and samples of the plants and animals he had collected
very similar to each other
come to exist
Maybe animals evolved as they adapted to their changing environments
that there was a difference between the finches on each of the islands
had evolved according to what food was available on that particular island
Careful reading
4
5
slowly evolved into many new species
had evolved from a common ancestor, which had arrived on the islands a long time before
had evolved from lower forms of life
Read Para.6 and choose the correct answer.
_______ to believe
people were _______
______ to believe
refused
shocked
started
_______ to believe
people were _______
______ to believe
refused
shocked
started
People’s reaction towards the theory
Read Para.7 and choose the correct answer.
Journey on the ___________
Journey to discover _______________
The Theory of Evolution
ship Beagle
A Journey of Discovery
▲
( )1.What made Darwin start to question the existing belief about species
A.The samples he collected.
B.The similar animals he saw.
C.The trip to South America.
D.The captain’s influence.
B
Post-reading
( )2.How was Darwin’s theory of evolution received at first
A.Widely accepted. B.Totally ignored.
C.Met with shock. D.Praised by all.
C
( )3.What can we infer from the article
A.Darwin was not interested in medicine.
B.Darwin and his father always had a bad relationship.
C.Darwin had the idea of evolution before he boarded the Beagle.
D.Darwin spent many years writing On the Origin of Species.
A
Darwin’s interest in various living things made him a great naturalist.
B. Darwin’s journey on the Beagle inspired his Theory of Evolution.
C. Darwin went on a journey to confirm his theory that humans had evolved over time.
4. Choose the main idea of the passage and give your reasons.
1831
the Beagle
started his journey
South America,
asked himself questions
(generated ideas)
1835(developed an idea)
answered the question
1859
published the book
(proposed a theory)
Darwin spent _____ years on his discovery
But spent _____years publishing his Theory of Evolution in 1859
4
24
A ________ Journey of __________Discovery by_______Darwin
tough
important
brave
perseverant
Summary
dangerous
revolutionary
Discussion
How do you think the human species will evolve in the future ( changes in the environment, technology, social structures, and so on.)
One possibility is that humans may continue to evolve physically to better adapt to our changing environment and lifestyles.
Another possibility is that humans may evolve culturally and socially, rather than physically. As we continue to develop new forms of communication and interaction, our social structures and cultural practices may change in ways that shape our evolution.
Ultimately, the future of human evolution is uncertain, and it is impossible to predict exactly how our species will evolve in the coming years and centuries. However, it is clear that our evolution will continue to be shaped by the choices we make and the world we create around us.
Think and share
What good qualities contributed to Darwin's success in scientific exploration
endurance耐力
bravery
…
hard work
perseverance毅力
Self-belief
interest
courage
curiosity
critical thinking
determination
I can succeed in science, the most important thing is the love of science and insisting on long-term exploration.
---Charles Robert Darwin
Darwin’s scientific spirit
Thank you!