資源簡(jiǎn)介

(共30張PPT)
Unit 5 Revealing nature
Starting Out&Understanding Ideas
Activity 1
Look at the page from a science magazine and answer the questions.
1. What do you know about these animals
What makes them special
2. What other similar animals do you know about Share your knowledge with the class.
They are all species that survived for thousands of years on earth; They are old and rare (unusual).
Jellyfish（水母）Jellyfish are soft-bodied，free-swimming aquatic（水生的）animals with an umbrella-shaped bell.They are found in every ocean.
Starting out
Komodo dragon（科莫多巨蜥）:
Komodo dragons were first encountered by Western researchers in 1910. The researchers said the ancestor of the Komodo dragon most likely evolved in Australia and spread westward, reaching the Indonesian island of Flores 900,000 years ago.
The Komodo dragon is the largest lizard in the world. It can grow to three metres in length and can weigh about 135 kilograms. Despite its size and weight, it can run for short distances at up to 20 kilometres per hour.
Duck-billed platypus（鴨嘴獸）:
The first scientists to examine a preserved platypus body judged it a fake in the late 18th century. The oldest discovered fossil of the modern platypus dates back to about 100,000 years ago.
The duck-billed platypus is a small egg-laying mammal (up to 60 cm in length) found only in Eastern Australia including Tasmania. As its name suggests, it has a mouth that looks like a duck’s bill, while its thick fur and flat tail are similar to those of a beaver（海貍）.
Nautilus（鸚鵡螺）:
As one of the oldest sea animal in the world, the nautilus has hardly changed in about 500 million years, and that is why it is often given the name “l(fā)iving fossil”.
1. How can seeds travel How can this benefit plants
2. Can you think of another example of seeds travelling Share it with the class.
Watch the video and answer the questions.
Activity 2
How seeds travel
How can seeds travel
Seeds cane travel great distances by being carried by the _________ , upon the ____________, __________ or __________.
wind
water
animals
people
2. How can this benefit plants
Seeds have a __________(better/worse) chance at life when they are ________(closer/further) away from their parent plant. Growing too _________(far/close)to the parent plant means seeds might not get enough_______, ________and nutrients from the _______. A species is ________(more/less) likely to _________ if its members are more ________(closely/widely) spread.
better
further
close
sun
water
soil
more
survive
widely
The structure
1
2--5
The text is organized in order of______ .
Para___
Para___
Para 6-7
time
Before
the journey
During
the journey
England
In 1831
In 1835
Fast reading
Can you find out what kind of narrative order(敘述順序)
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.
Para1: Labels on a young man
He was ______
____________.
He was a young man
_____________________________________________________________________ .
He was _______
________________
________________
________________
in captain’s
eyes
in common
people’s eyes
in his families’
eyes
not the
first choice
who had left medical
school without
completing his degree
a
disgrace to
himself and
all his family
Before the journey
Careful reading
1.The captain of the ship, the Beagle, wanted someone who would “profit by the opportunity of visiting distant countries yet little known”. The person who answered the call was not the captain’s first choice. It was a young man who had left medical school without completing his degree. What’s more, he had recently received a letter from his father predicting 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.
He was not the captain’s first choice.
He was a disgrace to himself and all his family.
He was a young man who had left medical school without completing his degree.
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 environments. 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
Charles Darwin was a geologist and naturalist, fascinated by rocks, plants and animals.
How did different species come to exist
Samples of the plants and animals
All species had appeared on Earth at the same time, and had not changed since.
Animals evolved as they adapted to their changing environments.
To look for more evidence.
3.At that time, people believed that all species had appeared on Earth at 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 environments It was just an idea, but enough to inspire Darwin to look for more evidence.
Darwin noticed finches’ beaks had evolved according to what food was available on that particular island.
New species of plants and animals evolved from earlier ancestors.
4.When the Beagle reached the Galápagos 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.
5.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.
South America, asked himself questions (generated ideas)
1835,answered the question(developed an idea)
1859,published the book (proposed a theory)
1831, the Beagle,started his journey
1831
the Beagle
started his journey
South America,
asked himself questions
(generated ideas)
1859
published the book
(proposed a theory)
Darwin spent _____ years on his discovery
But spent _____years publishing his Theory of Evolution in 1859
4
24
A ________ Journey of ___________Discovery by______________________Darwin
tough
important
brave and perseverant
Summary
(developed an idea)
answered the question
1835
Can you speak out some famous Chinese Scientists
The spirit of Chinese scientists
Post reading
What have you learnt about the spirit of scientific exploration How can this spirit help you in your life and studies
Russian President Vladimir Putin on Monday signed two decrees recognizing the "Luhansk People's Republic (LPR)" and the "Donetsk People's Republic (DPR)" as independent and sovereign states. The U.S. has announced financial sanctions against the rebel territories in eastern Ukraine freshly recognized by Russia. The EU said the bloc will also react with sanctions.
Russian President Vladimir Putin on Monday signed two decrees recognizing the "Luhansk People's Republic (LPR)" and the "Donetsk People's Republic (DPR)" as independent and sovereign states. The U.S. has announced financial sanctions against the rebel territories in eastern Ukraine freshly recognized by Russia. The EU said the bloc will also react with sanctions.
an official order from a ruler or a government that becomes the law 法令；政令
to issue/sign a decree
頒布 / 簽署法令
Russian President Vladimir Putin on Monday signed two decrees recognizing the "Luhansk People's Republic (LPR)" and the "Donetsk People's Republic (DPR)" as independent and sovereign states. The U.S. has announced financial sanctions against the rebel territories in eastern Ukraine freshly recognized by Russia. The EU said the bloc will also react with sanctions.
sovereign | s vr n | (of a country or state 國(guó)家) free to govern itself; completely independent 有主權(quán)的；完全獨(dú)立的
Russian President Vladimir Putin on Monday signed two decrees recognizing the "Luhansk People's Republic (LPR)" and the "Donetsk People's Republic (DPR)" as independent and sovereign states. The U.S. has announced financial sanctions against the rebel territories in eastern Ukraine freshly recognized by Russia. The EU said the bloc will also react with sanctions.
a person who fights against the government of their country
反政府的人；叛亂者；造反者
Russian President Vladimir Putin on Monday signed two decrees recognizing the "Luhansk People's Republic (LPR)" and the "Donetsk People's Republic (DPR)" as independent and sovereign states. The U.S. has announced financial sanctions against the rebel territories in eastern Ukraine freshly recognized by Russia. The EU said the bloc will also react with sanctions.
= recently 最近地
Russian President Vladimir Putin on Monday signed two decrees recognizing the "Luhansk People's Republic (LPR)" and the "Donetsk People's Republic (DPR)" as independent and sovereign states. The U.S. has announced financial sanctions against the rebel territories in eastern Ukraine freshly recognized by Russia. The EU said the bloc will also react with sanctions.
a group of countries that work closely together because they have similar political interests （政治利益一致的）國(guó)家集團(tuán)
Russian President Vladimir Putin on Monday signed two decrees recognizing the "Luhansk People's Republic (LPR)" and the "Donetsk People's Republic (DPR)" as independent and sovereign states. The U.S. has announced financial sanctions against the rebel territories in eastern Ukraine freshly recognized by Russia. The EU said the bloc will also react with sanctions.
周一，俄羅斯總統(tǒng)普京簽署兩份法令，承認(rèn)頓涅茨克人民共和國(guó)和盧甘斯克人民共和國(guó)為獨(dú)立主權(quán)國(guó)家。
對(duì)于剛剛獲得俄羅斯承認(rèn)的烏東反政府地區(qū)，美國(guó)宣布對(duì)其實(shí)施經(jīng)濟(jì)制裁。歐盟稱(chēng)他們也將進(jìn)行經(jīng)濟(jì)制裁。
Expressions
……的恥辱
有史以來(lái)最重要的科學(xué)發(fā)現(xiàn)之一
所說(shuō)的這個(gè)年輕人
給……機(jī)會(huì)……
研究各種各樣的生物
產(chǎn)生（exist短語(yǔ)）
進(jìn)化成很多新物種
引起強(qiáng)烈反響
從更低的生命形式進(jìn)化而來(lái)
a disgrace to…
one of the most important scientific discoveries of all time
the young man in question
give… the chance to do…
study various living things
come to exist / come into existence
evolve into many different species
cause a storm
evolve from lower forms of life
What kind of person was Darwin according to the passage
What have you learnt about the spirit of scientific exploration
Darwin was a determined man. He had strong curiosity and interests in science and was good at thinking and making discoveries.
Think and Share
3. Number the pieces in order. Organise information from the passage and complete them.
1 On his journey
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
come to exist
Maybe animals evolved as they adapted to their changing environments
3 Look for more evidence
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
4 Develop ideas
had evolved from a common ancestor, which had arrived on the islands a long time before
slowly evolved into many new species
5 Propose a theory
had evolved from lower forms of life

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