Unit 5 Revealing Nature Understanding Ideas （教学课件）-外研版高中英语（2019）选择性必修一

(共22张PPT)
Unit5 A journey of Discovery
understanding ideas
外研版高中英语（2019）选择性必修一
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Learning Objectives
1.Get the main idea by scanning the text;
2.Understand the structure of the text and the journey of discovery;
3.Learn Darwin's spirit of scientific exploration and innovation.
After the class, you can:
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the evolutionary tree
lower forms of life
higher forms of life
evolution
Charles Darwin

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A Journey of Discovery
Look at the title and pictures and guess:
1.Whose journey is it
2.What is he doing
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1. What is the genre
2.How does the author organise the passage
3.When and why did the journey start
4.What's the main idea of the passage
Darwin 's journey on the Beagle inspired his Theory of Evolution.
the time order
narrative
scanning
1831
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The background-para.1
What did the captain and his father think of him
Darwin
not the first choice
Why？
A disgrace to his family
Why？
How did he respond give up
the captain
his father
1831
left England on the ship
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During the journey(Para2-6)
para4
para5
para6
para2
para3
1831
1835
1859
On the journey
Generate ideas
Look for more evidence
Develop ideas
Propose a theory
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As he studied_______________________________________________,
he asked himself the question:________________________________,
When he noticed ____________________________________________,
he asked himself the question:_________________________________,
How did Darwin generate his ideas on the journey
What evidence did he look for
He noticed that ___________________________________________________________
It seemed ___________________________________________________________
What evidence did he look for
how did different species come to exist
some species of animals were very similar to each other
the samples of the plants and animals he had collected
maybe animals evolved as they adapted
to their changing environment
there was a difference between the finches on each of the islands
their beaks had evolved according to what food was available on that particular island
Generate ideas
(提出想法)
Look for more evidence
During the journey(Para2-4)
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1.What did he suspect？What conclusion did he draw？
2.How did people react to his theory of evolution
at first？And many years later
They evolved from a common ancestor
He suspected that the finches had evolved from a common ancestor and over time , it had slowly evolved into many new species
During the journey(Para5-6)
Propose a theory
caused a storm
felt shocked
so convincing that ...started to believe
the Theory
of Evolution
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Interview
Now discuss why Darwin did not publish his Theory of Evolution until 1859, about twenty years after his discovery.
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After the journey(Para7)
How to describe On the Origin of Species by Darwin
be regarded as one of the most important works ever written
changed ideas about life on Earth forever
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determined and persistent
brave and courageous
curious and interested
patient and diligent
devoted andinnovative
What kind of person was Darwin according to the passage
the spirits
of the scientist
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para4
para5
para6
para2
para3
1831
1835
1859
On the journey
Generate ideas
Look for more evidence
Develop ideas
Propose a theory
A Journey of Discovery
the discovery
Summary
A ________Journey of ________Discovery by________Darwin
dangerous
adventurous
challenging
important
remarkable
revolutionary
refreshing
brave
courageous
determined
persistent
devoted
curious
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What have you learned about the spirit of scientific exploration
How can this spirit help you in your life and studies
Think Share
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May you a good discoverer;
Always seek the truth;
Keep curious about anything;
Think independently;
Question anything;
Be a real explorer not just in study ,but also in your life!
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Assignment：
1. Make a wall newspaper on Darwin' s journey of discovery.
2. Surf the Internet to collect more information about Darwin.
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https://www.21cnjy.com/help/help_extract.php
让备课更有效
www.21cnjy.com
Thanks!