一、复习
1.复习比较两个数的大小。
师:我们已经学了怎样比较亿以内数的大小,谁来说一说比较大小的方法。(指名1、2个学生回答)
师让学生自己完整的总结:首先要看数位是否相同,相同的数位就要从最高位比起,如果不能比较出来,就一位一位往下比,直到比出大小为止。如果数位不相同,就看哪一个数的数位多那个数就大。
2.复习把整万的数改写成用万作单位的数。
1100000=110万 1210000=121万 720000=72万
师:要写成以万作单位的数就要把万后面的零去掉,要加上一个万字。
3.做一做练习 学生独立完成,全班核对。
二、复习求近似数的方法
1.让学生表演地球与太阳(课本例6)。
2.师:大约130万个是一个什么数?
生:是一个大概数,近似数。
师:求一个近似数要用什么方法?
生:四舍五入。
3.1275610000=1万 13890001390000=139万
13000=13千 =1389千
① 师:我们要省略万后面的尾数应该怎么做?
生:首先找出万位,再看千位上的数是否满5,不满5就四舍,满5就五入,然后在把万后面的数改写成零或加一个万字。
② 请同学思考:如果是省略千、百后面的尾数又该怎么办呢?
做练习15页的做一做,然后在小组内交流。请小组派代表来汇报。
生总结:省略哪一个数位上的数要先找出那个数位,然后看到右边下一位是否满5决定四舍五入,但必须在后面加上省略那一数位上的计数单位。
三、巩固练习
1.第4题 由师生对答哪些是近似数,哪些是准确数。
2.第5题 由学生自己独立完成,然后开火车的形式校正,并要求说明过程。
3.第7题 由老师提示,讲解题意,然后让学生独立完成,同桌互对。投影校对,并让学生提出质疑。
4.第8题 学生独立完成,拿学生的课本投影校对,并请学生说明理由。
四、课堂小结
让学生说说这节课的体会,并答解疑难问题。
初稿
As is shown above, a leader father is sitting in the chair with a seal grasping in the hand, and a lot of money beside him. He seriously said to his son that there is more to life than just money -it is power. Simple as the picture is, but a profound truth is reveled in the picture.
I surely disagree with father ’s philosophy. As a leader, he shouldn ’t use his power to make money. It is his duty to serve people wholeheartedly, just one person said “with great power comes great responsibility ”. If he stick to his philosophy. I believe that he will spend the rest of his life in prison. What’s worse, he could affect his son ’s philosophy, guiding him in the opposite direction , nothing can be done to reverse the trend itself. The only solution is to change father ’s philosophy. Because of many greedy officials in China, it is time to reverse the trend itself by establishing new policy. As Chinese always has been our confidence that we can change for the better and better.
In my opinion, there is more to to life than just money -it is happiness, nothing is important than happiness. We can live a colorful life in our spare time.
自评
As is shown above, a leader father is sitting in the chair with a seal grasping in the hand, and a lot of money beside him. He seriously said to his son that there is more to life than just money it is power. Simple as the picture is, but a profound truth is reveled in the picture.
I surely disagree with father ’s philosophy. As a leader, he shouldn ’t use his power to make money. It is his duty to serve people wholeheartedly, just one person said “with great power comes great responsibility ”. If he stick to his philosophy. I believe that he will spend the rest of his life in prison. What’s worse, he could affect his son ’s philosophy, guiding him in the opposite direction , nothing can be done to reverse the trend itself. The only solution is to change father ’s philosophy. Because of many greedy officials in China, it is time to reverse the trend itself by establishing new policy. As Chinese always has been our confidence that we can change for the better and better.
In my opinion, there is more to life than just money it is happiness, nothing is important than happiness. We can live a colorful life in our spare time.
评分:23
互评(刘兴顺评)
As is shown above, a leader father is sitting in the chair with a seal grasping in the hand, and a lot of money beside him. He seriously said to his son that there is more to life than just money it is power. Simple as the picture is, but a profound truth is reveled in the picture.
I surely disagree with father ’s philosophy. As a leader, he shouldn ’t use his power to make money. It is his duty to serve people wholeheartedly, just one person said “with great power comes great responsibility ”. If he stick to his philosophy. I believe that he will spend the rest of his life in prison. What’s worse, he could affect his son ’s philosophy, guiding him in the opposite direction , nothing can be done to reverse the trend itself. The only solution is to change father ’s philosophy. Because of many greedy officials in China, it is time to reverse the trend itself by establishing new policy. As Chinese always has been our confidence that we can change for the better and better.
In my opinion, there is more to life than just money -it is happiness, nothing is important than happiness. We can live a colorful life in our spare time.
评分:23
互评(战越评)
As is shown above, a leader father is sitting in the chair with a seal grasping in the hand, and a lot of money beside him. He seriously said to his son that there is more to life than just money it is power. Simple as the picture is, but a profound truth is reveled in the picture.
I surely disagree with father ’s philosophy. As a leader, he shouldn ’t use his power to make money. It is his duty to serve people wholeheartedly, just one person said “with great power comes great responsibility ”. If he stick to his philosophy. I believe that he will spend the rest of his life in prison. What’s worse, he could affect his son ’s philosophy, guiding him in the opposite direction , nothing can be done to reverse the trend itself. The only solution is to change father ’s philosophy. Because of many greedy officials in China, it is time to reverse the trend itself by establishing new policy. As Chinese always has been our confidence that we can change for the better and better.
In my opinion, there is more to life than just money -it is happiness, nothing is important than happiness. We can live a colorful life in our spare time.
评分:
互评(李春霞评)
As is shown above, a leader father is sitting in the chair with a seal grasping in the hand, and a lot of money beside him. He seriously said to his son that there is more to life than just money it is power. Simple as the picture is, but a profound truth is reveled in the picture.
I surely disagree with father ’s philosophy. As a leader, he shouldn ’t use his power to make money. It is his duty to serve people wholeheartedly, just one person said “with great power comes great responsibility ”. If he stick to his philosophy. I believe that he will spend the rest of his life in prison. What’s worse, he could affect his son ’s philosophy, guiding him in the opposite direction , nothing can be done to reverse the trend itself. The only solution is to change father ’s philosophy. Because of many greedy officials in China, it is time to reverse the trend itself by establishing new policy. As Chinese always has been our confidence that we can change for the better and better.
In my opinion, there is more to life than just money -it is happiness, nothing is important than happiness. We can live a colorful life in our spare time.
评分:
It ______ ______ ______ the train will be late.
答案:is likely that
2. It is likely that the typhoon will sweep across the island.
The typhoon ______ ______ ______ ______ across the island.
答案:is likely to sweep
3. I think trying to stop the couple quarrelling will be of no use.
I think it's ______ ______ ______ to stop the couple quarrelling.
答案:no use trying
4. Every time I was in trouble, he had no hesitation in helping me.
Every time I was in trouble, he came to help me ______ ______.
答案:without hesitation
5. He never hesitates to help if I have any problem.
He always helps me ______ ______ if I have any problem.
答案:without hesitation
6. I crossed the street so as not to meet him, but he saw me and came running towards me.
I crossed the street to ______ ______ him, but he saw me and came running towards me.
答案:avoid seeing
7. It seems that the students in that class have all passed the qualified exam.
All of the students in that class ______ ______ ______ ______ the qualified exam.
答案:seem to have passed
8. It seems that the boys of the class are playing football on the playground.
The boys of the class ______ ______ ______ ______ football on the playground.
答案:seem to be playing
“加油!加油!……”这是怎么回事,操场上这么热闹?哦!原来是学校正在举行一年一度的跳绳比赛,这是三年级3班和三年级4班的比赛呀!
比赛前,同学们兴高采烈地跑到操场上,大家异常的兴奋。有的同学非常紧张,正捧着水“咕咚、咕咚”地大口喝水;有的同学觉得自己心有成竹了,不由地聊起天来;还有的同学生怕跳不好,还在抓紧练习呢!
只听见老师一声令下,比赛正式开始了。同学们甩着手中五颜六色的绳子,脚上不停的跳着。你看,我们班的汪天赤,他飞快的甩着手中的绳子;看那边的吴嘉祥,他拼命的甩着绳子,把绳子都甩出去了!看那边的叶程也是不示弱,双手甩着绳子,脚下还不时的发出“呼呼”声,那优美的动作像一只美丽的蝴蝶一样翩翩起舞哩!
时间一分一秒的过去了,不一会儿,我就要上场了,我拿起绳子,心里忐忑不安,我挺直腰板,飞快的甩着绳子,脚下像装了两个弹簧一样,不停地跳着,过了不久,我累得上气不接下气了,心想;要是我放弃了就会给班级拖后腿的,我一定不能放弃!就在这时,我听见一旁的同学们一个劲儿的大声喊道;“加油,加油!”我听到了,鼓足了劲头,我一边跳,一边心里默默地数;162、163、164……突然老师吹响了哨子,我竟然跳了180下!我一看分数挡,我们班得了第一名,虽然此时我已经气喘吁吁了,但是,心里还是很自豪的!
我们班得了第一名同学们全围到了我身边,欣喜若狂的说;“张子骞,你太棒了,这次拿到奖状,还是你的功劳啊!”比赛就在这一阵欢声笑语中结束了……
这真是一场精彩的跳绳比赛啊!我一定永远把这段回忆留在我的心里。
1.重点:学会比较亿以内数的大小。能把整万的数改写用万作单位的数。
2.难点:学会比较位数相同亿以内数的大小。能正确地省略万后面的尾数写出它的近似数。
3.关键:以比较万以内数为基础,把个级比较方法推广到万级,能正确比较亿以内数的大小。把生活中的某些镜头带到学生面前,由果到因,让学生体会近似值在社会生活中的实际应用。
我在这慢长的少年时期的道路上,和你一起踏过这路上的所有荆棘与坎坷,你在前方艰难的解决,而我在后方无忧的走来,就不知是你一直在帮我,走着走着,猝然回首,才知道你的默默帮助。
谢谢你的一路陪伴,一直到交叉路口,各奔西东,很难再相见。
在我进入六年级的前一天晚上,千万家的灯火都熄灭了,进入梦乡,唯有我家不同,在你的房间中,还有一只蜡烛还在燃烧,你在一旁一丝不苟的弄着什么,我悄悄的走进一看,咦!这不是我的备用被子吗?由于你的专注,完全不知我在身后,一针一线地缝着,偶尔还停下,揉揉发酸的眼睛,还在喃喃地说;“天气冷了,还得加层棉絮才行……”又继续缝着,原来这么晚还不睡是因为我呀!那昏黄的烛光火仿佛窜入了我的心中,如种子一样拔散在我心田上,长出一株株幼苗。
不由自由的想起了孟郊的《游子吟》;“慈母手中线,游子身上衣。临行密密缝,意恐迟迟归。谁言寸草心,报得三春晖?”你就像一支蜡烛,为我而点燃,在黑暗中给我光明;你就像一阵清风,为我而吹拂,在炎热中给我清爽;你就像一朵牡丹,为我而生存,在暗淡中给我色彩;你就像一只萤火虫,为我而存在,在迷失中给我指路……
母亲,我的母亲呀!你给我的太多。太多了,如果说我对你的爱是溪流,那么你对我的爱将会是汪洋大海!
母亲,谢谢您的一路相伴,您的付出如大海,每当我的人生之船遇到困难,你就会托起我这只船,带我到安全的地方,你总是那么伟大、那么无私!
谢谢你的一路相伴,谢谢您,我的母亲!在我遇到困难,你总会及时的出现帮助我,让我感到“山重水复疑无路,柳暗花明又一村。”谢谢您的一路相伴……
我在等一轮明月,我在等一场风来。
题记
放下书卷,灯芯的火焰即将熄灭,挑挑灯芯,添一些煤油,火焰又重新明亮起来。推开窗,星光洒进来,满地都是,门前的小路银光闪闪,两旁野草漫舞
就像多年前的那个夏夜,星光点点,桂花的幽香飘满整个城市,人们都已进入美好的梦乡。马路上孤单的你,为何一个人游荡?花瓣落到你的头上,你也不管,跌跌撞撞的前行。星光落寞,月光黯淡
晚风吹来,叶子飒飒作响,花瓣如雨,纷纷扬扬,在昏黄的路灯照耀下,就像片片的雪花。南海边,此时是否有鲛人在岸,对月流珠?海风是否吹起你的长发,拂过你的脸颊?你的泪珠,承载了我的牵挂
思念东躲西藏,却依旧逃不过回忆的目光。晚风的声音,送来那略显青涩的曾经,不知流珠何处。也许最柔软的朦胧,也可以抵抗最强硬的锋芒,也可以流到你我的身边,散发爱恋的清香。浪花拍打着海岸,拍打出一阵阵哀婉的歌声。
灯火又一次黯淡,灯芯无力的低头,仿佛抗拒不了命运的我们,只能默默暗自神伤。不同的是,灯芯可以重新焕发光明,而我们却无法脱身书卷上的字,清晰可见。春花秋月何时了,往事知多少无法摆脱的往事,春花秋月又如何不去悲伤
风来了,蒲公英把它的思念化作一团绒毛,风作信使,带给远方。杨柳在风里为你一舞,你注意到了杨柳,却没有看见杨柳身边的我
我吹灭了灯盏,星光依然。无月影仍在,你是否会来?
等一轮明月,等一场风来
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