(共19张PPT)
A Journey of Discovery
lower forms of life
higher forms of life
evolve---evolution
An evolutionary tree
The Theory of Evolution
On the Origin of Species
《物种起源》
Choose the main idea
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.
Activity 1.Extensive reading
Activity 2 Intensive Reading
Number the puzzle
pieces in order
according to how Darwin
generated the
Theory of Evolution.
On his journey
Darwin studied ________________________________________________
_____________________________________________________________
He noticed that some species of animals were _______________________
various living things in their natural environments and samples of the plants and animals he had collected.
very similar to each other
2. Generate ideas
Darwin asked the questions:
How did different species _____________________________
_____________________________________________________________
come to exist
Maybe animals evolved as they adapted to their changing environments
Para 2. The young man in question, 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 to study various living things in their natural environment. After Darwin had spent some time in South America, his room on the ship was crowded with samples of the plants and animals he had collected. As he studied these, he asked himself the question: how did different species come to exist
Para 3. At that time, people believed that all species had appeared on Earth a the same time, and had not changed since. But Darwin began to think differently. He noticed that some species of animals were very similar to each other. Maybe animals evolved as they adapted to their changing environment It was just an idea, but enough to inspire Darwin to look for more evidence.
Para 2. The young man in question, 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 to study various living things in their natural environment. After Darwin had spent some time in South America, his room on the ship was crowded with samples of the plants and animals he had collected. As he studied these, he asked himself the question: how did different species come to exist
Para 3. At that time, people believed that all species had appeared on Earth a the same time, and had not changed since. But Darwin began to think differently. He noticed that some species of animals were very similar to each other. Maybe animals evolved as they adapted to their changing environment It was just an idea, but enough to inspire Darwin to look for more evidence.
Para 4. When the Beagle reached the Galapagos Islands in 1835, Darwin saw a variety of new species, but it was the birds that interested him the most. Darwin noticed that there was a difference between the finches on each of the islands. It seemed their beaks had evolved according to what food was available on that particular island.
3. Look for more evidence
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
Para5. Darwin suspected that the finches had evolved from a common ancestor, which had arrived on the islands a long time before. Over time, it had slowly evolved into many new species. And that was the answer to how new species of plants and animals came to exist: they evolved from earlier ancestors.
4. Develop ideas
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
Para6. It was a completely new idea—a theory of evolution. Darwin explained this theory in his book, On the Origin of Species. It was not published until 1859 and immediately caused a storm. Many people refused to believe that living things, including humans, had evolved from lower forms of life. They were shocked. But Darwin’s scientific studies were so convincing that more and more people started to believe his theory.
5. Propose a theory
The Theory of Evolution: living things, including humans, _______________
___________________________________________________
had evolved
from lower forms of life
species exist/ animals evolved
studied/noticed
difference/beaks
suspected/arrived/evolved
living things/evolved
Activity3. Think & Share
1)Work in pairs. Suppose you are in an interview program “Talk with Celebrities”, one student is the interviewer , and the other one is “Darwin”.Act out an interview with the “Darwin” about his journey of discovery.
Tips: you may use the following questions.
What did you find on your journey......
How did you solve your puzzles......
Talk with Celebrities
Activity3. Think & Share
2)What have you learnt about the spirit of scientific exploration How can this spirit help you in your life and studies
Scientific discoveries are based on the research and the evidence.
The scientific exploration may take quite a long time and great efforts, courage and determination to achieve.
`
？
hard work
perseverance
endurance
bravery
Self-belief
interest
courage
…
How can this spirit help you in your life and studies
I can succeed in science, the most important thing is the love of science and insisting on
long- term exploration.
---Charles Robert Darwin
Homework
Write a Passage “The man I admire most--- Charles Darwin”
Tips: You may use some useful expressions in the passage
