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(共19张PPT)
Unit 5
Revealing
nature
Understanding ideas
A Journey of Discovery
Pre-reading
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
The British , and the founder of Theory of Evolution，fascinated by , and . In his early years, he sailed around the world on the Beagle for five years, and observed and collected a lot of animals, plants and geological structures. He published the Origin of Species and put forward the theory of biological evolution.
Charles Robert Darwin
Feb 12th, 1809—Apr 19th, 1882
geologist
naturalist
rocks
plants
animals
Darwin's Theory of Evolution is one of the basic foundations of modern science. It shows that plants and animals can change over time. The changes are usually small and difficult to detect, but they add up over many generations and can result in new species.
How did he make the discovery
Before the journey
On his journey
Generate ideas
Look for more evidence
Develop ideas
Propose a theory
significance of the theory
Para.1
Para.7
Para.2
Para.3
Para.4
Para.5
Para.6
Para. 2: On his journey
Para. 3: Generate ideas
GENERATE IDEAS
Darwin asked the questions:
How did different species_____________？
____________________________________________________________________
come to exist
Maybe animals evolved as they adapted to their changing environments？
ON HIS JOURNEY
Darwin studied ____________________________________
He noticed that some species of animals were ____________________________________
living things and collected samples
very similar to each other
premise All species were created by ________. Some species of animals were very __________ to each other.
The environment was ___________.
conclusion All species had appeared on Earth _________________, and had not ________ since. Maybe animals _________ as they ____________ their changing environments.
God
at the same time
changed
similar
changing
evolved
adapted to
Para. 4: Look for more evidence
LOOK FOR EVIDENCE
On the Galápagos Islands:
He noticed ____________________________________________________________________________
It seemed the beaks ____________________________________________________________________________
had evolved according to what food was available on that particular island
that there was a difference between the finches on each of the islands
Para. 5: Develop ideas
DEVELOP IDEAS
Darwin suspected that the finches ________________________________________________
and it had ________________________________________________.
had evolved from a common ancestor
slowly evolved into many new species
A _________ ancestor
__________ into different species
common
evolve
Para. 6: Propose a theory
PROPOSE A THEORY
The Theory of Evolution: living things, including humans,
____________________________________________.
had evolved from lower forms of life
_______ to believe
people were _______
______ to believe
refused
shocked
started
Careful-reading
first choice
completing his degree
medical school
disgrace
He was not the captain’s _____ ______
He was a ________ to himself and all his family
He was a young man who had left _______ ______without___________.
Labels on a young man
In common people’eyes
In captain’eyes
In families’eyes
Read Para. 1 and think
Para_____
Para______
Para_____
While-reading
The structure
1
2-5
The text is organized in order of ______.
time
Before
the journey
During
the journey
After
the journey
6-7
Choose the main idea of the passage and give your reasons.
Darwin’s interest in various living things made him a great naturalist.
Darwin’s journey on the Beagle inspired his Theory of Evolution.
Darwin went on a journey to confirm his theory that humans had evolved over time.
What have you learnt about the spirit of scientific exploration How can this spirit help you in your life and studies
Be a real explorer not just in study, but also in your life!
How do you think the human species will evolve in the future

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