课件47张PPT。Give me a fulcrum, and I shall lift the Earth.ArchimedesUnit 1 Wise men in history求知是人的本能AesopWhich of these ancient countries is in Europe?
Greece B. Egypt
2. Which of these people lived in ancient Greece?
Archimedes B. Julius Caesar
3. What was Archimedes?
A scientist B. A painter
4. Archimedes died in 212 BC. How long ago was that?
A.About 1,800 years ago B. About 2,200 years ago.
5. Aristotle was famous as an ancient Greek _____.
A. philosopher B. physicist
6. “The wolf and the sheep” “the fox and the grapes” “the farmer and the snake” and “ the rabbit and the tortoise’’ were all told by_____.
A. Archimedes B. Aesop
the Archimedes Law the discovery of Archimedes LawArchimedes and the golden crown
In ancient Greece, King Hiero asked a crown maker to make him a golden crown. At first, he was very happy with it.It’s a nice crown, isn’t it?Later, however, he began to doubt that it was a
real golden crown. Is it made completely of gold?He sent it to Archimedes and asked him to find
out the truth. This problem seems difficult to solve. What should I do?Archimedes was still thinking about this problem as he filled his bath with water.When he got into the bath, some water
ran over.That’s it! I know how to solve the king’s problem!Archimedes and the golden crown1ReadingRead paragraphs 1 and 2. Then complete the flow chart about the beginning of the story.Read paragraphs 3 to 5 and answer the questions.When did the story happen?
2. Why did King Hiero send the crown to Archimedes?
3. Who was the crown made for?
4. What is Archimedes doing in the first picture?
5. Why is Archimedes so excited?
In ancient Greece. King Hiero.He was taking a bath.Because he had an idea./ Because he
knew how to solve the problem.(Line 1-13)Because he doubted that the crown was a real golden crown and he wanted Archimedes to find out the truth.In ancient(同义词)______, a _____ _____ made a _____ crown for king Hiero(同义句). But the king ________ that it was a _____ golden crown, so he asked Archimedes to find out (同义词) the _____.
It _____ that the problem was difficult(同义词) ___solve(同义词)(本句可改写为_____________
______________). Archimedes was still _______ ______(考虑)(同义词) this problem when (同义词) he(指代) filled his(指代) bath ______ water. (从句可改写为_____________________________.
___________(就这个！) shouted Archimedes. Finally(同义词语) he knew _________
________________________(如何解决这个问题) Greece crown maker golden doubted realtruth seemed to The problem seemed difficult to solve thinking about withas the bath was full of water That’s it how to/ how he should solve the problemFirst, he weighed the crown and asked the king for some gold of the same weight. Next, he put two pots into two big bowls and
filled both pots with water. 1He put the gold into one pot and the crown into the other pot. A crown made completely of gold displaces less water than a crown made of gold and another metal.This crown displaced more water than gold of the same weight.I’m certain that it is not
completely made of gold.The crown maker tricked me, didn’t he? What a bad man he is!The king then sent the crown maker to prison.Read paragraphs 6 to 8 and complete the flow chart.What happened when Archimedes got into the bath?
What is in the right pot in the second picture?
Where did he put the two pots?
What will happen to the crown if it is completely made of gold?
Some water ran over/ran out of the bath/was displaced. A golden crownIn two big bowls.It will displace the same amount of water as the gold.(Line 14-30)What did the crown maker do to the crown?
What happened to the crown maker?
What do you think of Archimedes?
He put another metal into the crown.He was sent to prison.Wise.(Line 31,32)Archimedes LawThe gold has ___ ______weight ____ the crown. the same asWhen you put the gold into the pot, some water
will _____ ______. run overThe same with the ______. crown1When they don’t displace ____ _____ _______ _____
water, we know the crown isn’t ___________
made of gold. the same amount of completelyKing Hiero asked a crown maker to make him a golden crown.
At first, he was very happy with it.
He sent it to Archimedes and asked him to find out the truth.
What a bad man he is!
I’m sure that it’s not completely made of gold.
King Hiero.King HieroKing Hiero, the crown makerArchimedesthe crownthe crownArchimedesthe crownpronounsIn ancient______, a _____ _____ made a _____ crown for king Hiero. But the king ________ that it was a _____ golden crown, so he asked Archimedes to find out the _____. Archimedes _________ the crown and asked the king for some gold _____
_______(同等重量). Then he put two pots ____ two big _____ and _____ both pots ____ water. He put the gold and the crown into the pots individually, _________(根据)the different amounts of water that the gold and the crown __________(排出) into the bowls, he could tell that the crown was not _________ made ___gold and the crown maker was _________________(送进监狱).Greece crown makergolden doubtedtruthweighedof the sameintobowlsfilledwithaccording todisplacedcompletelyof sent to prisonrealweightC1 Here are some sentences from the story on page 3. Do you know the meanings of
the words in italics? Circle the correct answers.1. Later, however, he began to doubt that …
a feel sure b not feel sure
This problem seems difficult to solve.
a write down b find the correct answer
… as he filled his bath with water.
a made … full b emptied
Next, he put two pots into two big bowls …
a deep round dishes b flat dishes
5. A crown made completely of gold displaces less water …
a a little b a smaller amount of Some water ran over/ was displaced.
Because he doubted that the crown was a real golden crown and he wanted Archimedes to find out the truth.He put another metal into the crown.ComprehensionD2 Read the story again and answer the questions below in complete sentences.3
527846ComprehensionD1 These pictures show the events of the story on page 3. Put them in the correct order
by writing the numbers 1–8 in the boxes.Read the story and find the right sentences from the article according to each picture. Later, however, he began
to doubt that it was a real golden crown. “Is it made completely of gold?” he wondered. He sent it to Archimedes and asked him to find out the truth. Archimedes was still thinking about this problem as he filled his bath with water. When he got into the bath, some water ran over. First, he weighed the crown and asked the king for some gold of the same weight. He put the gold into one pot, and some water ran into the bowl.Then he put the crown into the other pot. This time, even more water ran into the bowl.This crown displaced more water than gold of the same weight, so I’m certain that it’s not completely made of gold. “The crown maker tricked me, didn’t he? What a bad man he is!” shouted King Hiero. He then sent the crown maker to prison.
