百分数与小数的互换教学课件.ppt

1、热身运动热身运动:你能把下面的小数化成分数吗？你能把下面的小数化成分数吗？101100231000731100991 0.731 1.990.1 0.23你能把下面的分数化成小数吗？你能把下面的分数化成小数吗？10710051103110003740.70.510.3741.33.把下面的分数化为百分数把下面的分数化为百分数.1007100287100351008.17%35%1.8%287%27%124%0.4%0.251.40.123 谁能帮我们按从大到小的顺序排列谁能帮我们按从大到小的顺序排列?小数小数百分数百分数你可以把它们变成同一类型的数吗？你可以把它们变成同一类型的数吗？情景导入情

2、景导入小数小数百分数百分数 小数点向右移动两位小数点向右移动两位,加上加上%0.250.1231.425%12.3%140%你发现了什么？你发现了什么？解决问题解决问题:你能把下面的小数化成百分数吗？你能把下面的小数化成百分数吗？0.38 1.0538%38%300%300%5.5%5.5%105%105%0.055 3小数小数百分数百分数 27%124%0.4%0.271.240.004你发现了什么？你发现了什么？去掉去掉%,小数点向左移动两位小数点向左移动两位解决问题解决问题:1.把下面各个百分数化成小数把下面各个百分数化成小数.15%80%3.5%135%0.150.035 0.8 1.

3、3527%124%0.4%0.251.40.123从大到小排列：从大到小排列：小数百分数小数点向右移动两位小数点向右移动两位,加上加上%去掉去掉%,小数点向左移动两位小数点向左移动两位比较大小比较大小:0.52 52%1.2 12.3%254%0.254 0.25%0.025把相等的数用线连起来：把相等的数用线连起来：0.2572%0.415106%1.317.6%130%0.17625%0.721.0641.5%判断，对的打判断，对的打“”，错的打，错的打“”。1、1.041=1041%（）2、2%=0.02 （）3、100%=1 （）4、300%=0.3 （）5、0.8%=0.08 （）s

4、peakingringingwritingtypingSpoken languageWritten languageBody languageWays of communicating gesturing gesture 手势，姿势手势，姿势n.thumbs upgood job/the number oneOKbadCome here.Be quiet!expression 表情，神态shockedthoughtful excited tiredsurprised angry sadIts unfair!Wheres myMum?I won a tour around world?disap

5、pointed adj.be disappointed at sth.Jay was disappointed at the bad news.disappointedWhy cant I find a good job?Look at the photo and skim the story to find out:1.What is the main topic of the story?2.Where are Debbie and Simon?Body language.They are at work,in the office of a travel agency.3.Who giv

6、es Simon advice?4.In the photo,which person looks more friendly,the boy or the girl?A senior employee,Mr Young.The girl(Debbie).Read the story and complete the chart:nameBody language outcomeDebbieSimonsit up and hold head up,make eye contact with the customers,always smile,greet cheerfully look fri

7、endly,make others feel welcome rest head on hand,look downwards,never smile,look unfriendly,make others go away well-dressed 穿着讲究的adj.People are well-dressed at the wedding.enter 进入,登台 v.Dont enter the office without knocking.exit 退出退出,退场退场 v.出口出口 n.entrance 入口入口 n.exit visa出境签证出境签证 fire exit安全出安全出口

8、口 glance at 匆匆一看 浏览报纸 glance at the newspapers greet 和某人打招呼，迎接和某人打招呼，迎接v.greeting 问候，欢迎问候，欢迎n.People in France greet friends with kissing instead of shaking hands.sigh 叹气 v./n.How can I lose my weight?,he sighed.Miss Cat left with a sigh.Poor guy!Whats up,Simon?Whats up?=Whats the matter?a senior em

9、ployee一位级别较高的职员一位级别较高的职员 senior:holding a higher position employee:a person who is paid to work for other people prefer A(to B)选择选择(而不选择而不选择)你想喝什么，茶还是咖啡？Which would you prefer,tea or coffee?我想喝茶，不想喝咖啡 I prefer tea to coffee.她愿意步行，不愿意骑车 She prefers walking to cycling.The customers always prefer Debbi

10、e to me.Its the way you municate with sb.与某人沟通 Parents should always communicate with their munication沟通，交流 n.Speech is not the only method of communication.语言并不是唯一的沟通方式I dont even get a chance to speak to them.我甚至没有和他们说话的机会 get a chance有机会 take a chance 冒一冒险,碰碰运气,by chance偶然,意外地 I met an old friend

11、 by chance.语言语言并不是我们唯一的并不是我们唯一的沟通沟通方式方式.Its the way you stand and sit.定语从句定语从句它是它是你站立和坐姿你站立和坐姿的方式。的方式。那是一种怎样的语言那是一种怎样的语言?What kind/sort of?什么类型什么类型？What kind/sort of shoes would you like?What kind of language is that?You whole appearance communicates things.你的整体外貌都能传达信息 appearance外观，外貌出现n.Dont judge

12、 by appearances.切勿以貌取人 appear出现 v.He didnt appear until 9pm.直到点他才出现 He rests his head on his hand.rest 被支撑，托v.He doesnt look up.He never smiles.Simon He does not make a good impression on people.make a good imopression on sb.给某人留下好印象给某人留下好印象 make eye contact with 与某人眼神交流 She is holding her head up.S

13、he smiles.She makes eye contact with the customers.Debbie It is important to make eye contact with your teamplayers when playing basketball.Without hesitation,she went to Simon and gave him a big smile.hesitation 犹豫犹豫 n.She agreed without hesitation.她毫不犹豫地同意了 hesitate犹豫犹豫 v.Dont hesitate to tell us

14、if you have a problem.你有问题就直截了当地告诉我们。She wanted to remind me that tomorrow is her birthday.remind 提醒 v.Do I have to remind you again?需要我再次提醒你吗？remind sb of sth.提醒某人某事 This song reminds me of my hometown.这首让我想起了我的家乡 reminder提示信，通知信 n.C Find the meaning1.d2.f3.a4.c5.e6.bC1C21.sighed2.appearance3.witho

15、ut hesitation4.part-time5.gestures6.speechD Read and think4261735D2 Read the story again and answer the following questions.1 Why was Simon unhappy?2 What are the two ways of communication inthe story?The customers always prefer Debbie to him.Speech and body language.3 What is body language,accordin

16、g to Mr Young?4 Why did the customers not go to Simon?Its the way someone stands and sits.Its gestures and the expression on someonesface and in his or her eyes.He didnt make a good impression on the customers.5.Did Mr Young think Debbie had good bodylanguage?Why?6.Did Simon take Mr Youngs advice?Wh

17、at did he decide to do?No.Because he often rest his head on hishand.He doesnt look up.He never smiles.Yes,he did.He decided to improve his body language.1.Sarah glanced at the news and said nothing.Sarah quickly read the news and said nothing.2.The picture reminded me of my childhood.The picture hel

18、ped me remember my childhood.3.She agreed to go with us without hesitation.She agreed to go with us at once.4.An air-hostess should make eye contact with passengers when they ask for help.An air-hostess should look directly at passengers when they ask for help.5.He prefers math to English.He likes math better than English.6.We have made up our minds to improve our English.We have decided to make our English better.7.Please give my regards to your parents.Please remember me to your parents.8.Whats up,Simon?Whats the matter,Simon?Whats happening,Simon?