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(共25张PPT)
（外研版）选择性必修一
Unit 5 Revealing Nature
Understanding ideas
A Journey of Discovery (Reading)
Find out the main idea,genre,developing order and some specific information about the passage.
A
Learn about the spirit of scientific exploration and put it into use in life and studies.
B
Role -play an interview about the journey of discovery and the spirit of scientific exploration .
C
Learning Aims
Lead-in
Look at the evolutionary tree and
answer the questions.
What is he famous for
Who can you think of when seeing the picture
The Theory of Evolution
On the Origin of Species
《物种起源》
Charles Darwin
Pre -reading
Predict (according to the title and picture)
1.Whose journey is it
2.What did he discover
While-reading
1.Choose the main idea and give your reasons.（P68，3’）
1. Darwin’s interest in various living things made him a good naturalist.
3. Darwin went on a journey to confirm his theory that humans
had evolved over time.
2. Darwin’s journey on the Beagle inspired his Theory of Evolution.
England
In 1831
In 1835
2.What is the genre of the text and how is it developed
The genre of the text is____.
A. argumentation B. exposition C. narrative
It is developed in order of______ .
C
time
3.（page69）
Number the puzzle pieces in order and fill in the blanks. ( Organise information from
the passage and complete them.)
1
4
2
3
5
Darwin studied 1.___________________________________
2.__________________________________________________
He noticed that some species of animals were __________________________________________________
1.various living things in their natural environments and samples of the plants and animals he had collected.
very similar to each other.
1.On his journey
Darwin asked the questions:
How did different species _____________________________
_____________________________________________________________
come to exist
Maybe animals evolved as they adapted to their changing
environments
2.Generate ideas
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
3.More evidence
Darwin suspected that the finches ___________________________________
________________________________________and it had_______________________________
had evolved from a common ancestor,
which had arrived on the islands a long time before.
slowly evolved into many new species.
4.Develop ideas
had evolved from lower forms of life
The Theory of Evolution: living things, including humans,
__________________________________________
5.Propose a theory
the Beagle
started his journey
Darwin spent _____ years on his discovery
But he spent _____years publishing his Theory of Evolution.
4
24
Retell
1831
South America
1835
asked himself questions
(generated ideas)
(developed an idea)
answered the question
1859
published the book
(proposed a theory)
post-reading
1.Discuss in groups of four.
Why Darwin didn’t publish his Theory of Evolution until 1859, about twenty four years after his discovery
(Tips:1.Consider what challenges he met and what he needed to do during those years. 2.Consider two aspects: the social factors and personal factors )
Watch a video to learn more about Darwin and his discovery.
1.He needed much time to do research, look for more evidence and perfect his theory.
He had great pressure from society
2.He suffered all kinds of diseases and could only work
1-2hours a day.
Social
factors :
Personal
factors:
His theory of evolution is against creationism.
2.Brainstorm
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
2.Brainstorm
What good qualities contributed to Darwin's success in scientific exploration
determination
3.Role Play-Interview
Work in pairs. One is the interviewer, and the other is “Charles Darwin”, interview about Charles Darwin’s journey of discovery and good qualities helpful in scientific exploration.
1831
1835
Interview
Interviewer: Mr. Darwin, can you tell us something about your journey of discovery simply Charles Darwin:
Interviewer: Mr. Darwin, what do you think are the good qualities helpful in scientific exploration Charles Darwin:
South America
1859
All of us are on the journey of life.
We all are born with the good qualities Darwin has.
We just need to arouse them and use them!
Wish all of you a good journey of life.
Inspiration
Write a passage or make a speech titled “ Charles Darwin---The Man I Admire Most” using some useful expressions in the passage.
Homework
Thanks for listening!

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