資源簡介

(共21張PPT)
Understanding ideas
A journey of
Discovery
Who is he
Do you know his famous work
What is it about
Activate your background knowledge!
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 environments 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.”
Charles Darwin
1.Do you know the species in the picture
Look at the evolutionary tree and answer the questions.
Paramecium, earthworm, snail,
crab, fish, tortoise,
bird, horse, human, frog, alga, moss,
fern, plant…
Use your biological knowledge!
2 What factors can cause the process of evolution
The ever-changing environment of nature; environmental changes; population immigration; genetic mutation;
cultural preferences...
Use your biological knowledge!
How did Darwin come up with the theory of evolution
Share your information with us
Read the passage (4 min) and talk about your understanding of the title.
Most commonly, people believe that a journey means a trip from one place to another, especially over a long distance and literately a journey refers to the process by which something gradually changes and develops. The title may indicate that Darwin’s research work leading to his discovery of evolution and the origin of species .
choose the main idea of the passage and give your reasons
1. Darwin’s interest in various living things made him a great naturalist.
2. Darwin’s journey on the Beagle inspired his Theory of Evolution.
3. Darwin went on a journey to confirm his theory that humans had evolved over time.
number the puzzle pieces in order. Organize information from the passage and complete them.
the beginning of his journey
Darwin is a young man who ____________________
Darwin’s adventure on The Beagle has led to __________________
A young man who had left medical school without completing his degree. What`s more, his father predicted in his letter that he would be “a disgrace to yourself and all your family.”
Despite all this, his adventures on this ship would lead to one of the most important scientific discoveries of all time.
Beagle
1. The beginning of the journey
Charles Darwin was a geologist and naturalist, fascinated by rocks, plants and animals.
Darwin studied:
various living things in their natural environments and samples of the plants and animals he had collected.
He noticed :
that some species of animals were very similar to each other.
2. On his journey
BACKGROUND:
At that time, people believed that all species had appeared on Earth at the same time, and had not changed since.
However, as he studied these, Darwin asked himself the questions:
3. Generate ideas
How did different species come to exist
Maybe animals evolved as they adapted to their changing environments？
the theory of evolution:
living things, including human _____________________________
4. Propose a theory
evolved from earlier ancestors
On the Galapagos Islands :
He noticed that there was a difference between the finches on each of the islands.
5. Look for more evidence
It seemed the beaks had evolved according to what food was available on that particular island.
Rare birds on the islands
Darwin suspected that the finches had evolved from a common ancestor, which had arrived on the islands a long time before and it had slowly evolved into many new species.
6. Develop ideas
The theory of Evolution:
living things , including humans had evolved from lower forms of life.
7. Propose a theory
Today , On the Origin of Species is regarded as one of the most important works ever written. It has changed ideas about life on Earth forever. And it all began with the journey on the Beagle.
Darwin was a determined man. He had strong curiosity and interests in science and was good at thinking and making discoveries.
1 Why were many people “shocked”by Darwin`s theory
2 What kind of person was Darwin according to the passage
At that time, many people believed that all species had appeared on Earth at the same time and had not changed since, but Darwin’s theory proposed that living things, including humans, had evolved from lower forms of life, which, as a result, shocked many people.
Think and Share
Charles Darwin was a geologist and naturalist, fascinated by rocks, plants and animals. He left England on the ship, the Beagle, in 1831. The journey gave him the chance 1_____________(study) various living things in their natural environments. He noticed that some species of animals were very similar 2______ each other.
At that time, people believed that all species had appeared on Earth at the same time, and 3__________________(change) since. But Darwin began to think differently.
When the ship reached the Galapagos Islands in 1835, it 4_______(be) the birds that interested him the most. He suspected that the different 5____________(finch) had evolved from a common ancestor, 6_______ had arrived on the islands a long time before.
直擊高考
to study
to
had not changed
was
finches
which
It was a 7____________(complete) new idea---a theory of evolution. Darwin explained this theory in his book, On the Origin of Species. Many people refused to believe that living things, 8___________(include) humans, had evolved from lower forms of life. But Darwin`s scientific studies were so convincing 9_________ more and more people started to believe his theory.
Today , the book is regarded as one of the most important works ever 10_____________(write).
completely
including
that
written
Anti-Darwinian Theory
HOMEWORK:
Write a short report on the anti-Darwinian theory.
① Explain their theory briefly
② The justification of their theory（at least 3 points)
③ Your opinion (Do you agree or not agree)

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