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? 雅Who work out “pi”？A Chinese mathematicianastronomerastronomermathematicianmathematici
2、anmeasuremeasureThe blue line is_The blue line is_The black line is_The black line is_ _circumferencediameterdiameteraccurateaccuratefoldfoldcuriositycuriosityWhat is the article about？What do you know about Zu Chongzhi？Zu ChongzhiZu ChongzhiZu Chongzhi is the first person to find Zu Chongzhi is the
3、 first person to find out piout piR e a d t h e f i r s t f o u r s e n t e n c e sR e a d t h e f i r s t f o u r s e n t e n c e 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 tau
4、ght him science.From an early age,Zu Chongzhi showed great intelligence and curiosity,with special interests in mathematics and astronomy.careeryear of birthyear of deathchildhoodcontributionsbirthplaceChinafirst teacherRead the first four sentences and complete the mindmapToday we know pi is endles
5、s， 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 between 3.1415926 and 3.1415927,and his result remained the most accurate value in the world for
6、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 to Learn to r a i s e r a i s e questions questions Answer the Answer the questions questions a n
7、d g e t a n d g e t points for points for your teamyour teamWhatWhatWhoWho 。WhyWhy 。WhereWhere 2345W5W1H1H1WhenWhenHowHow56Who 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.WHOWHATWHYWHEREH
8、OWQ: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 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 e
9、 a d t h e p a r a g r a p h t w oR e a d t h e p a r a g r a p h t w o try to understand the experiment try to understand the experimentuse a rope to use a rope to measure the measure the circumferenccircumference of the e of the wheelwheelfold the fold the rope into rope into three equal three equ
10、al partspartscompare compare the part the part with the with the diameterdiameterdiameter is diameter is always always shorter than shorter than the three the three equal partsequal parts1RoleRoleWhat to doWhat to doHow many How many studentsstudentsZu ChongzhiZu Chongzhiexplain the workexplain the
11、workone studentone studentNeighbourNeighbourcome to visit Zucome to visit Zuone studentone studentFamilyFamilyhelp Zu perform help Zu perform the workthe worktwo two studentsstudentsPasserbyPasserbypass by and watch pass by and watch what happenedwhat happenedtwo two studentsstudentsWhat can you lea
12、rn from Zu Chongzhi?never give upnever give uplook for the truth look for the truth in our daily livesin our daily lives1. Do the 1. Do the experiment for your parents and experiment for your parents and tell them the result of experiment clearly.tell them the result of experiment clearly.2.Your pen-friend Jackson(from UK) want to 2.Your pen-friend Jackson(from UK) want to know some Chinese mathematicianknow some Chinese mathematician，please please reply a letter to him. reply a letter to him. Thank you for listeningThank you for listening雅
