教学例5时,我出示情境图后引导学生一滴血液中含有:5000000个红细胞;含有10000个白细胞。1、读出数看看这两个数有什么特点?2、你有没有办法使别人一看到这个数就能使学生很快就能读出这个数吗?(A、给数分级B、把后面的四个0用东西盖死。C、把4个0去掉,换成一个万字)我问学生C,你是怎么想出这种办法的`,她说:“我是看到报纸上就有这样的数。”别的同学也有附和说,我也看到过。接下来再讲例6时,再让学生重点体验用“四舍五入”法将非整万数数省略万位后面的尾数改写成以“万”作单位的数比较得到的近似数比较接近准确数后,做练习巩固新知,让学生把非整万的数省略万位后面的尾数,用万作单位求近似数。
当练习第18页第8题时,题目要求:先写出横线上的数,再求近似数(省略万位后面的尾数)并没有要求用万作单位。
北京大钏寺的一口古钟上有二十万零一百八十四个汉字。
写作:200184省略万位后面的尾数求近似数是:A、200000。B、20万。
当时,我在备课时就只想到答案B。这时我问学生A,你为什么不把级上的数换成万呢?学生作到:题目中并没有要求用万作单位。其它同学也点头称是。我就又启发说:“你比较一下A和B两个答案那个表达更简洁呢?试图把答案统一成B。
现在我们班数学和英语成绩在108分以上的人很多,我的数学英语成绩在100到107分之间,非常羡慕他们,为什么他们越难的`题就越能做对,而我就不行呢?
原因是这样的,英语试卷上很多阅读题,我平时阅读得少,他们就读得多,理解能力很差,阅读速度慢。还有很多,我经常做一些稀奇古怪的事,不知道英文,就搞错,翻译能力也很差。有一些题是听短文判断对错的,我平时听磁带听得少,理解能力差,听对话回答问题的很灵便,不知会问些什么。别人经常听英语磁带,阅读英语文章,我以前英语很好的,因为以前是靠小聪明的,现在是靠勤奋的。我虽然去外面学习了英语,比别人不学的差,我以后要多听磁带,要联系上下文理解,多看作文的范文,多练习翻译,这样才能学好英语。数学试卷上有很多计算题,数字的位数很多,算不准,除法要试商,试商要估算,估不准,算百分数的最多要算4位小数,进位退位的有时口算不准。我平时都用计算器算数,以后要在家多练习,思维反应也慢,别人在二三年级时就把口算背熟了,我那时太懒了。有些应用题很多步,很容易错,制条形统计图时要用尺子仔细平均分,我没仔细,就点错了位置。有时要把概念背熟,我记忆力差,但是这些话很短,本来很快背熟的,我在家除了做完作业就算了,没有多复习。
于薇也跟我一样,她期中考试数学只有106分,原来是115分的,怕回家大大叫她多学,就哭了,回家不签名,她也不注意方法。小艳莹英语考试只有104分,雪妍116分,小艳莹就去踢雪妍,英语老师还骂她,游间她。
Mr Gao lives in a town .When he was twenty-five ,his son was born .He calls him Gao Ling .The little boy is clever .He and his wife love him very much .
It’s September 1today .A few school year begins Gao Ling is happy and wears his most beautiful clothes .He’s going to school with his new bag .
“Let me take you to school ,dear ,”said Mrs Gao .
“Thank you ,mummy ,”said the boy .“The school isn’t far from here .I can go there myself .”
At school a teacher met the little boy and asked ,“What’s your name ,my little friend ?”
“Gao Ling ,sir ,”answered the boy .
“How old are you ?”
“Six ,sir .”
“What’s your father’s name ?”
“Gao Dalin ,sir .”
“How old is he ?”
“Oh ,”the teacher said in surprise .“Is he as old as you ?”
“Yes ,sir ,”said the boy .“He became a father only on that day when I was born .”
我和我的'父亲一样老
高先生住在一个小镇上。他二十五岁时,他的儿子是天生的。他把他叫做高岭。这个小男孩很聪明。他和他的妻子非常爱他。
这是九月1今天。新学年开始高岭是快乐的,穿着最漂亮的衣服。他将背着他的新书包上学去。
“让我带你去学校,亲爱的,说:”高夫人。
“谢谢您,妈妈,”男孩说。“学校离这儿不远。我可以自己到那儿去的。”
在学校,老师遇到了小男孩问道,“你叫什么名字,我的小朋友?“
“高岭,先生,”男孩回答。
你多大了?“
“六,先生。”
你爸爸叫什么名字?“
“高大林,先生。”
他多大年纪了?“
“哦,”老师吃惊的说。“他和你一样大吗?“
“是的,先生,”男孩说。“他父亲只在那一天,当我是天生的。”
The fox, filled with arrogance, examined the cat from head to feet, and for a long time did not know whether he should give an answer. At last he said, "Oh, you poor beard-licker, you speckled fool, you hungry mouse hunter, what are you thinking? Have you the nerve to ask how I am doing? What do you know? How many tricks do you understand?"
"I understand but one," answered the cat, modestly.
"What kind of a trick is it?" asked the fox.
"When the dogs are chasing me, I can jump into a tree and save myself."
"Is that all?" said the fox. "I am master of a hundred tricks, and in addition to that I have a sackful of cunning. I feel sorry for you. Come with me, and I will teach you how one escapes from the dogs."
Just then a hunter came by with four dogs. The cat jumped nimbly up a tree, and sat down at its top, where the branches and foliage completely hid her.
"Untie your sack, Mr. Fox, untie your sack," the cat shouted to him, but the dogs had already seized him, and were holding him fast.
"Oh, Mr. Fox," shouted the cat. "You and your hundred tricks are left in the lurch. If you been able to climb like I can, you would not have lost your life."
一只猫在森林里遇到一只狐狸,心想:“他又聪明,又丰富,挺受人尊重的。”於是它很友好地和狐狸打招呼:“日安,尊敬的狐狸先生,您好吗?这些日子挺艰难的,您过得怎么样?”
狐狸傲慢地将猫从头到脚地打量了一番,半天拿不定主意是不是该和它说话。最后它说:“哦,你这个倒霉的长着鬍子、满身花纹的傻瓜、饥肠辘辘地追赶老鼠的.傢伙,你会啥?有甚么资格问我过得怎么样?你都学了点甚么本事?”
“我只有一种本领。”猫谦虚地说。
“甚么本领?”狐狸问。
“有人追我的时候,我会爬到树上去藏起来保护自己。”
“就这本事?”狐狸不屑地说,“我掌握了上百种本领,而且还有满口袋计谋。我真觉得你可怜,跟着我吧,我教你怎么从追捕中逃生。”
就在这时,猎人带着四条狗走近了。猫敏捷地窜到一棵树上,在树顶上蹲伏下来,茂密的树叶把它遮挡得严严实实。
“快打开你的计谋口袋,狐狸先生,快打开呀!”猫冲着狐狸喊道。可是猎狗已经将狐狸扑倒咬住了。“哎呀,狐狸先生,”猫喊道,“你的千百种本领就这么给扔掉了!假如你能像我一样爬树就不至於丢了性命了!”
Country Garden and Me
On the way from Panyu City to Shunde City and approaching the conjunction point of both cities, a big advertisement board of the infamous Country Garden will catch your eyes. And on the board, a lovely girl gently holds a little white pigeon.
She looks at everybody with a sweet smile. Who is this girl? Let me tell you later. Country Garden is located at the Beijao town, Shunde City of Guangdong Province. Ten years ago when my Dad and Mom took me as a baby to Guangzhou, it was a wasteland here. But what does this piece of wasteland look like nowadays? Country Garden has been developed and enlarged rapidly on the ground of this land, and a great number of high-quality houses and apartments have been built up within the garden. Over the past decade, other nine country gardens with various unique designs have been erasing around the great city of Guangzhou. The construction and management of several gardens have engaged the devoted contributions from my Dad and Mom.
Country Garden has grown up together with me, and I am one of the witnesses of its growth and development.
© 2022 xuexicn.net,All Rights Reserved.