初中英语 沪教牛津版 8A Unit2 Numbers More Practice 课件

1、Unit2 NumbersMore Practice深圳实验学校初中部 张颖What do these pictures refer to?Step 1：warming -upnumbers abacusIf there are no written numbers , how can we count things?tokens made from clay or small stonesStep 2：brainstormingfingers and toes代币marks on sticks and bonesCan you guess the order of their occurri

2、ng time?tokens made from clay or small stonesStep 3: predictingfingers and toesmarks on sticks and bonesThis article mainly talks about the _ of counting methods. difference developmentdesignStep 4：skimmingScan the article and then complete the flow chart about the development of counting methods.th

3、eir fingers and even their toessmall marks on sticks and bonestokens made from clay or small stonessystems of written marksthe HinduArabic systemStep 5：scanningthe order of their occurring timetokens made from clay or small stonesfingers and toesmarks on sticks and bonesStep 5：scanningStep 6：Intensi

4、ve readingcould countAt firstsmall numbersusedfingers and toesAt first, people used their fingers, and even their toes. However they could only count small numbers in this way.Step 6：Intensive readingAfter that, they began to make small marks on sticks and bones. This helped them count bigger number

5、s. They used them to count things like the days of the month, the amount of food and the number of animals they had.After thatbegan to makemarks on sticks and boneshelpedcountbigger numberslikethe days of the monththe amount of foodthe number of animalsStep 6：Intensive readingThen people began to us

6、e tokens made from clay or small stones. This helped them count even bigger numbers. They often put the tokens on pieces of string so that they could carry them around easily. This developed into tools like the abacus.Then began to useto counteven bigger numbersputondeveloped intotokens made from cl

7、ay or small stonestoolsStep 6：Intensive readingFinally, people began to develop systems of written marks to show different numbers, and this led to the Hindu-Arabic system (0-9). We are still using this system today.Finally began todevelopto showdifferent numbersled tosystems of written marksHindu-A

8、rabic system Step 6：Intensive readingHowever, they could only count small numbers in this way. This helped them count bigger numbers. This helped them count even bigger numbers. Using their fingers and even their toesMaking small marks on sticks and bonesUsing tokens made from clay or small stonesWh

9、at does this refer to?Step 6：Intensive readingThis developed into tools like the abacus. and this led to the Hindu-Arabic system (09). We are still using this system today. Putting the tokens on pieces of stringDeveloping systems of written marksThe Hindu-Arabic systemWhat does this refer to?This of

10、ten refers to something mentioned before.Things people usedWhat to countExamples fingers and toessmall numbers(small) marks on sticks and bonesbigger numberstokens made from clay or small stoneseven bigger numberssystems of written marksthe days of the monththe amount of foodthe number of animalsthe

11、 Hindu-Arabic system (0-9)the abacusdevelopmentmore and more advanceddifferentnumbersStep 7：RetellAt first,Then, After that,Finally,Step 8：Further-thinkingdifferent numbersfor exampleStep 9：Creative story-makingChoose some of the pictures below and then try to make a short story.Step 9：Creative stor

12、y-makinga 10-year-old boy135 cm tallOn October 21, 2019his ninth birthdayunforgettablegot up at 7:00 in the morningcost 49.99 yuanfifty percent offwatched the football matchFrance won by 3-2saw strong smoke coming outcalled 119the fire was put outAt first,After that,Then, Finally, HomeworkThink of m

13、ore occasions (场合) where we use numbers and then try to make a short story with them.Review the article we learned today and fill in the blanks. _, people used their _ and even their _. However they could only count _ in this way. _, they began to make _.This helped them count _ . They used them to count things like the days of the month, the amount of food and the number of animals they had. _ people began to use _. This helped them count _ . They often put the tokens on pieces of string so that they c