课件38张PPT。Look at the pictures and the headings on page 57. Put them in the right order of development(发展). 0Look and arrangeThe h______ of numbers0Ancient numbersZeroCalculating machinesBrain against computeristory0the development of the calculating machinesHow many languages do you know? Everyone knows at least two—
his or her own language and the
international language of numbers. Numbers: Everyone’s languageU4ReadingAncient peopleAncient numbersWhat number do these pictures show?In ancient times, people wrote numbers in many different ways, as these pictures of the number 6 show. However, they nearly all counted in the same way—in tens.Ancient numbersPeople wrote numbers ____________________,
However, they nearly all counted______________
---in ______. Ancient numbers In ancient times,Part Onein many different waysin the same wayas show.these pictures of the number 6tens True or FalseLong long ago, people wrote numbers in many different ways.
The 4 pictures are all showing the number 8.
People count numbers in the same ways- in tens.TFTWho can answer it most quickly?Zero is a number.
Zero is an especially important number./?'spe??l?/1.Most of us use the s_________ of numbers with numbers from 1 to 9 and 0 (zero).
2.With these t______ numbers, we can write a______ number from the b___________ to the s_________.
3. The Indians f______ invented and d_________ the 1 to 9 system of numbers.
4.They then invented the zero.
5.This was a very important i___________ because it made it e__________ to write big numbers and to calculate.ystemennyiggestmallestirsteveloped/?n'ven?n/nventionasierPart TwoAnswer the questions1. What numbers are there in the system of numbers?
__________________________
2. What did the Indians invent and develop first?
__________________________
3. What was a very important invention?
__________________________
4. Why ?
__________________________
Numbers from 1 to 9 and 0.They first invented and developed the 1 to 9 system of numbers.The invention of zero.It’s because it made it easier to write big numbers and to calculate.three kinds of calculating machinesan abacusan electronic calculatora computer/'?b?k?s//??lek'tr?n?k/Calculating machinesOne of the first calculating machines was an abacus. Abacuses are so fast and accurate that people still use them today.
A modern electronic calculator can add, subtract, multiply and divide. It can also calculate percentages and square roots.
Computers are very powerful calculating machines. In a flash, a computer can do a calculation that you could not do in your whole lifetime.one of the _____calculating machinesAbacuses are so _____________
that people still use them todayPart ThreeCalculating machines abacusWhy do people use it?electronic calculatora modern calculating machinecan ___ , ______, ______ and _____can calculate ____________ and _____________computera very _______calculating machinecan do a calculation that you could not do_______________ ____________ add subtract multiply divide percentages square rootsfast and accuratefirstpowerfulin your whole lifetime in a flashcomputera human brainliving computerBrain computer, which is more powerful?/?'ɡenst//'hju:m?n/againstCan you solve the problem?Find the number that, when it is multiplied 23 times by itself, gives this answer:
916748676920039158098660927585380162483106680144308622407126516427934657040867096593279205767480806790022783016354924852380335745316935111903596577547340075681688305620821016129132845546805780158806771Shakuntala Devi/s?lv/Find the number that, when it is multiplied 23 times by itself, gives this answer:
916748676920039158098660927585380162483106680144308622407126516427934657040867096593279205767480806790022783016354924852380335745316935111903596577547340075681688305620821016129132845546805780158806771Brain against computerSome people call the brain a living computer. Is a human brain a more powerful calculator than a computer? The following story may give an answer.
Shakuntala Devi is a lady from India with an amazing brain. Shakuntala and a very powerful computer were given this problem to solve.Shakuntala’s brain took fifty seconds to find the answer, like lightning. The computer took a minute. However, someone had to first program the computer with instructions, and that took many hours. No one had to program Shakuntala!
Use your own living computer to solve the problem above. If it is not powerful enough, you will find the answer on page 67.Answer: 546, 372, 891./'pr??ɡr?m/ how long howfifty seconds a minute (…took …to do) instructions__________ had to program Shakuntala!
She used her own l_______ computer to solve the problem above. No one iving,like ________ lightningsomeone had to first __________ the computer with _______________, and that took many hours. programReading timeWhat can you get from the history
of numbers and development of
the calculating machines?The pace of human history has never stopped.No match for AlphaGoMore readingNo match for AlphaGo
Go player Ke Jie lost all three games a________a computer program called AlphaGo.
Humans thought computer programs could not beat them in Go games (围棋). But AlphaGo, a program of Google's company DeepMind, proved them wrong.From May 23 to 27, AlphaGo beat the 19-year-old Chinese 3-0.
“I was shocked,” Ke said in a news conference (新闻发布会) after the three games. “Many moves of AlphaGo would never happen in a human competition.”
AlphaGo is an example of artificial intelligence (AI, 人工智能). AI is when computers or computer programs have smart behavior and think or act like a human. Scientists are now trying to make AI do everything from driving cars to writing stories。This worries some people. UK scientist Stephen Hawking even said that“the development of AI could mean the end of humans”.
However, DeepMind doesn't think this will happen. It believes that AI can help people solve hard scientific, technical and medical problems, like dealing with medical data (数据). “This isn't about man competing with AI, but rather using it as a tool to discover new knowledge together,” Said Demis Hassabis, CEO of DeepMind.
This is not the first time that AlphaGo has beaten a human. In March 2016, it beat top player Lee Se-dol (李世石) from South Korea.
AlphaGo is the first computer program to win in the Go game. But DeepMind said this game with Ke Jie was AlphaGo's last. It will not take part in any games in the future. go player:围棋棋手More readingNo match for AlphaGoTask 1: Computer programs couldn't beat humans in Go games.
Is that right? ____________
Task 2: Alphago will take part in more go games. T / F
Task 3: Fill in the blanks with the proper word.
Ke Jie lost all three games a________ AlphaGo.
Task 4: “I was shorked.” Ke said in a news conference.
Here shorked means _____.
A. interested B. excited C. surprised D. relaxed
Task 5: DeepMind doesn't think this will happen. This means ____.
A. Computers have smart behavior.
B. The development of AI could mean the end of human.
C. Computers think or act like a human.
D. AI will do everything from driving cars or writing stories.
ΟgainstCBNo,it isn't.Assignments today!Orally work:
1. Read the text aloud at least three times.
2. Find more articles about numbers on the internet to read and share with friends.
Written work:
3. Finish an exercise for page 57.No match for AlphaGo
Go player Ke Jie lost all three games a________a computer program called AlphaGo.
Humans thought computer programs could not beat them in Go games (围棋). But AlphaGo, a program of Google's company DeepMind, proved them wrong.From May 23 to 27, AlphaGo beat the 19-year-old Chinese 3-0.
“I was shocked,” Ke said in a news conference (新闻发布会) after the three games. “Many moves of AlphaGo would never happen in a human competition.”
AlphaGo is an example of artificial intelligence (AI, 人工智能). AI is when computers or computer programs have smart behavior and think or act like a human. Scientists are now trying to make AI do everything from driving cars to writing stories。This worries some people. UK scientist Stephen Hawking even said that“the development of AI could mean the end of humans”.
However, DeepMind doesn't think this will happen. It believes that AI can help people solve hard scientific, technical and medical problems, like dealing with medical data (数据). “This isn't about man competing with AI, but rather using it as a tool to discover new knowledge together,” Said Demis Hassabis, CEO of DeepMind.
This is not the first time that AlphaGo has beaten a human. In March 2016, it beat top player Lee Se-dol (李世石) from South Korea.
AlphaGo is the first computer program to win in the Go game. But DeepMind said this game with Ke Jie was AlphaGo's last. It will not take part in any games in the future. go player:围棋棋手More readingEnglish sayings with numberskill two birds with one stone 一箭双雕
at sixes and sevens 乱七八糟
Two heads are better than one. 三个臭皮匠胜过诸葛亮。
Ten to one he has forgotten it. 十有八九他已经忘了。
One man, no man. 个人是渺小的。
A man at sixteen will prove a child at sixty.
十六不成人,六十不成器。
One enemy is too many, and a hundred friends is too few.? 敌人一个也嫌多,朋友上百也嫌少。 Let’s share!c1 Choose the right meanings for these words.nearlya mostb almost
inventeda did not likeb made for the first time
accurate
a correctb easyin a flasha in a long timeb in a short time
lifetimea time that somebody worksb time that somebody lives
like lightninga very quicklyb very slowlyc2 Match the words in Column A with the meanings in Column B.发展系统计算有效的令人惊讶的解决闪电16-5c3 Write the words that go with the descriptions.1An ancient calculating machine that is still use today.2A living computer.3A small machine that uses electronic power to do calculations.4A very powerful machine for doing calculations.An ____________.The ____________.A ____________.A ____________.abacusbraincalculatorcomputerlanguagenumbersNumbersIn tensZeroAbacusesCalculating machineshuman braincomputer16-14D Complete answers to these questions about Mr Li’s article. Work alone or in pairs.16-15Can you explain why we count in tens?We count in tens because we have __________ fingers.
Which did the Indians invent first, the 1 to 9 number system or the zero?They invented the ____________________________ first.ten1 to 9 number system16-16Can you complete this sentence with three words to tell us that a computer works very fast?A computer can do a calculation _____________.
Can you use two words to tell us that Shakuntala’s brain works very fast?It can do a calculation _____________.
Is a human brain a more powerful calculator than a computer? Why?__________________________________________________________________________________________in a flashlike lightning(You can write your own answer here.)Answer the questions1. What numbers are there in the system of numbers?
__________________________
2. What did the Indias do first?
__________________________
3. What was a very important invention?
__________________________
4. Why ?
__________________________
/'s?st?m//?n'ven?n/Complete the tableaccuratepowerfulin a flashadd, subtract, multiply and divide/'?kj?r?t//h??l//'pa??fl/Part ThreeZeroMost of us use the system of numbers with numbers from 1 to 9 and 0 (zero). With these ten numbers, we can write any number from the biggest to the smallest. The Indians first invented and developed the 1 to 9 system of numbers. They then invented the zero. This was a very important invention because it made it easier to write big numbers and to calculate.