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1、The story of Zu Chongzhi雅great minds in Chinese history1.|LEAD-IN|2.|P R E-R E A D I N G|3.|W H I L E-R E A D I N G|4.|P O S T-R E A D I N G|CONTENTS CONTENTS 序What did the boy write on the blackboard?Watch the video雅Who work out“pi”？A Chinese mathematicianZu ChongzhiZu Chongzhiastronomermathematici
2、anmeasureThe blue line is_The clock is _The black line is_circumferencediameteraccuratefoldcuriosityWhat is the article about？What do you know about Zu Chongzhi？Zu ChongzhiZu Chongzhi is the first person to find out piR R e e a a d d t t h h e e f f i i r r s s t t f f o o u u r r s s e e n n t t e
3、e n n c c e e s s雅Zu Chongzhi(429-500AD)was a Chinese mathematician,astronomer and mechanic.He was born in a well-educated family.As an excellent engineer,Zu Chongzhis grandfather taught him science.From an early age,Zu Chongzhi showed great intelligence and curiosity,with special interests in mathe
4、matics and astronomy.About Zu ChongzhiAbout Zu Chongzhicareercareeryear of birthyear of birthyear of deathyear of deathchildhoodchildhoodmathematicianmathematicianastronomerastronomermechanicmechaniccontributionscontributions500500429429birthplacebirthplacea well-educated a well-educated family,fami
5、ly,ChinaChinashowed showed greatgreat intelligenceintelligence andand curiositycuriosity，with with interestinterest in math and astronomyin math and astronomyfirst teacherfirst teachergrandfather taught grandfather taught him sciencehim sciencework out work out“pi”“pi”Zu ChongzhiZu ChongzhiZu Chongz
6、hiZu ChongzhiRead the first four sentences and complete the mindmapToday we know pi is endless，but what is the most accurate value of pi in ancient time？Read sentence 5 to sentence 7Read sentence 5 to sentence 7Today we know Zu Chongzhi because he was the first person to find out that pi falls betwe
7、en 3.1415926 and 3.1415927,and his result remained the most accurate value in the world for more than 900 years.Zu Chongzhi also worked out the close value of pi th be 355/113,which he called“close ratio”.This ratio was so hard to get that a Japanese mathematician named it“Zus ratio”.雅Learn Learn to
8、 to raise raise questions questions Answer Answer the the questions questions and and get get points points for for your teamyour teamGROUP WORKGROUP WORKWhatWhatWhoWho 。WhyWhy 。WhereWhere 2345W5W1H1H1WhenWhenHowHow56Raise some questions forRaise some questions for your your classmates?classmates?Wh
9、o is the first person to Who is the first person to find out the pi?find out the pi?Why.Why.Where.Where.What is“close ratio”?What is“close ratio”?How.How.WHOWHATWHYWHEREHOWQ:Who is the first person to find out the pi?Q:Who is the first person to find out the pi?Q:What is“close ratio”?Q:What is“close
10、 ratio”?A:.A:.Q:Why did.?Q:Why did.?A:.A:.Q:Where.?Q:Where.?QW A 1234A:Zu ChongzhiA:Zu Chongzhi A:A:The close value of pi is 355/113The close value of pi is 355/113R R e e a a d d t t h h e e p p a a r r a a g g r r a a p p h h t t w w o o t tr ry y t to o u un nd de er rs st ta an nd d t th he e e
11、ex xp pe er ri imme en nt t1 1use a rope to use a rope to measure the measure the circumference circumference of the wheelof the wheel2 2fold the fold the rope into rope into three equal three equal partsparts3 3compare compare the part the part with the with the diameterdiameter4 4diameter is diame
12、ter is always always shorter than shorter than the three the three equal partsequal parts1Steps of the experimentNow you are Zu ChongzhiNow you are Zu Chongzhi.You have just found You have just found what people believed for a long time is wrong!At what people believed for a long time is wrong!At th
13、at moment,your neighbours come to visit that moment,your neighbours come to visit you,you want to you,you want to.Lets role play and act it out!Lets role play and act it out!RoleWhat to doHow many studentsZu Chongzhiexplain the workone studentNeighbourcome to visit Zuone studentFamilyhelp Zu perform
14、 the worktwo studentsPasserbypass by and watch what happenedtwo studentsWhat can you learn from Zu Chongzhi?dont always believe in othersdont always believe in othersjust believe the factsjust believe the factsnever give uplook for the truth in our daily livesThe pi which Zu Chongzhi found is the mo
15、st accurate value in the world for 900 yearsIt makes China lead in the world for 900 yearsWe are proud of being ChineseWe are proud of being Chinese！HomeworkHomework：(choose one)(choose one)1.Do the experiment for your parents and tell them the result of experiment clearly.2.Your pen-friend Jackson(from UK)want to know some Chinese mathematician，please reply a letter to him.T T h ha an nk k y yo ou u f fo or r l li is st te en ni in ng g雅感谢您的聆听感谢您的聆听
初中英语：Reading-《The-story-of-Zu-Chongzhi》课件
