课上,我首先和学生一起回忆长度单位、面积单位、质量单位之间的进率,为本节课的学习打下基础。接下来由易到难,先尝试由低级单位的单名数改写成高级单位的单名数的题目,引导学生归纳低级单位的单名数改写成高级单位的单名数的方法是除以进率。然后通过尝试由高级单位的单名数改写成低级单位的单名数的例子.归纳总结高级单位的单名数改写成低级单位的单名数的方法是乘进率。
通过练习,学生掌握了单名数之间的改写方法后,尝试单名数与复名数之间的改写,引导学生在做这类题时,要看清楚是什么名数改写成什么名数,如果是复名数改写成高级单位的单名数,复名数中高级单位前面的数应写在单名数的整数部分,只需要把复名数中低级单位进行改写;如果是高级单位的单名数改写成复名数,要把原小数分成两部分:整数部分写在复名数的高级单位前,小数部分根据各单位间的进率进行改写。这样给学生一个清淅的解题思路,学生解题的正确率自然会提高。
为了让学生熟练掌握,我用一句话简单概括:“高改低乘进率,小数点向右移,低改高除以进率,小数点向左移”。
这堂课,我做得比较好的地方如下:
1、让学生在独立思考、同桌交流的过程中初步感知了名数改写的方法,让学生始终处于学习的主体地位,集中发展学生的思维,让学生自主探索、合作交流中探究、学习新知,从而关注学生学习的整个过程。
2、对于名数的概念,教材中没有明确的介绍,也不是这节课的重点,在学生猜测的基础上,我直接告诉学生:“一个数和单位名称合起来就是一个名数”,再在比较中了解单名数和复名数,学生对名数的'理解就比较清晰。这样学生很快的就知道了什么是“名数、单名数和复名数”。而单名数的改写我则采用学生先思考尝试后交流,在反馈中进行个别指导的方法,规范语言,归纳方法。这样让每一个孩子都学有所获,让不同的孩子有不同的收获。
3、在整个教学的过程中,尊重学生的思考,对有不同意见的学生,采用鼓励性的语言,让学生充分发表自己的看法,给每个孩子以展示自己的机会,充分调动了学生学习的积极性。
不足之处及改进措施:
1、在教学中也发现,学生虽然对单名数之间的改写方法理解掌握得比较好(高级单位化低级单位乘进率,低级单位化高级单位除以进率),但由于部分学生对于单位之间的进率不熟悉,特别是面积单位之间的进率掌握的不好,致使一些学生在改写时出错。在课前让学生整理长度单位、面积单位、质量单位之间的进率时,应该给学生一定的时间熟悉这些进率,以便提高解题的正确率。
2、个别学生移动小数点不够熟练,解题速度比较慢,尤其是把高级单位的单名数改成复名数或把复名数改成高级单位的单名数,学生出错较多。应在新课前复习一下有关这方面的整数练习题,以便为学生学习新知识做好铺垫。
暑假即将来临。
你班同学讨论了假期计划,提出了不同看法。
请根据提示写一篇有关讨论的英语短文,并谈谈你的看法。
注意:1.短文必须写在答题卡的指定区域,词数80——120(不含已写好部分)。
2.短文必须包括表中所列要点,可根据内容分段表达。
3.可适当增加细节,以使行文连贯。
4.参考词汇:眼界——horizon(或view)
One possible version:
The summer holiday is coming. Our class have had a discussion about what to do during the holiday. Some are in favor of staying at home. They think it’s both convenient and comfortable. What’s more, they can save money for other purposes. But they will lose the chance of getting to know the outside world.
However, others prefer to go out for traveling since it can increase their knowledge and broaden their horizons. But they will spend more money and meet some difficulties while traveling.
In my opinion, it would be much better to stay at home, for I can do what I like, such as reading books, watching TV, and helping my parents with the housework.
目前,学校存在少数学生考试作弊现象。
某英文杂志社拟对此现象向中学生征文,标题是“My Opinion on Cheating in Examinations”。
请根据下列提示用英语写一篇征文稿。
内容要点如下:
注意:1.短文必须包括所有内容要点,可适当发挥;
2.短文标题与开头已为你写好,不计入总词数;
3.词数:100左右。
4.参考词汇:作弊cheat(v.)
My Opinion on Cheating in Examinations
It is known to us all that some students cheat in examinations at school.____________
One possible version
My Opinion on Cheating in Examinations
It is known to us all that some students cheat in examinations at school.
As students, we often take examinations at school, but sometimes we have too many examinations which are too difficult for us. On the other hand, some of us are lazy and don’t work hard at their lessons. So when taking examinations, they sometimes cheat in order to get better results to please their parents and teachers.
In my opinion, it is wrong to cheat in examinations because it breaks the rules of schools. We students should be honest and try to get good results by studying hard instead of cheating in examinations. What’s more, we should improve our study methods and get well prepared for examinations.
假如你在一间书店(该书店卖各种杂志和书籍里打工,书店的老板是一个英国人。
每天很少顾客光顾,书店老板请你提出一些吸引顾客的建议。
注意:1、用英语表达,词数:120字左右。
2、可以编写对话或使用其他叙述方式。
One possible version:
them with interesting magazines and books.a poster outside announcing subjects of interest,such as music,films,video,football and so on.a special introductory price for first—time customers.Once they have come into the shop they will then see the other attractions.
where they can trade old books for new ones at a special price.in the shop where books and magazines interesting to them are on show.Invite them to come and sit in the comfortable chairs provided to meet their friends and look through books and magazines.
当前不少文学作品被改编成电影。
有人选择看电影,有人则喜欢读原著。
请你以“Film or book, which do you prefer”为题,按照下列要点写一篇英语短文:
1、看电影:省时、有趣、易懂
2、读原著:细节更多、语言优美
3、我的看法及理由
注意:1、词数:1502、参考词汇:original work或book in the original(原著)One possible Version
Film or book, which do you preferis that it takes less time to understand the whole story. Besides, the film is usually more interesting, and it is easier to follow.
They think that they can get more detailed information from the original. Meanwhile, the language in the book is possibly more lively and beautiful. home, reading quietly in a situation of my own, and what’s more, I am able to better understand the author’s ideas. In a word, to read the original work is better than to see the film based on it.
Dear Daddy,
亲爱的爸爸,
Thank you very much for your letter written to me. In your letter , you not only expressed your expectation to me , but also showed all your love to me . I was deeply moved . Thanks again ,Daddy .You said ," I hope you get bravery and perseverance, and can quickly grasp living skills like a lion ". Now I want to tell you that I will try my best to do everything well and live up to your expectations . Dear father , you are a great lion in my mind .
谢谢你给我写信。在信中,你不仅仅表达了你对我的期望,还展示了你对我所有的爱。我深深感动了。再次谢谢你,爸爸。你说,“我希望你能够变得勇敢和有耐心,并且能像狮子般快速的掌握生活技能。”现在我想说我会尽我最大的.努力把所有事情都做好来达到你的期望。亲爱的爸爸,你是我心中的狮子。
When I am absent mind , when I am depressed, you , my dear father is always there . Your advice and encouragement guide me through many difficulties . Thank you , Dad, for your help and understanding. I love you , Dad ,forever!
当我茫然、绝望时,是你,我亲爱的爸爸永远都在我身边。你的建议和勇气引导我克服许多的困难。谢谢你,爸爸,谢谢你的帮助和理解。我永远爱你,爸爸。
Father's Day
Yesterday was Father's Day. I had planned to give my father a present. But I didn't remember it until in the morning.It was too late to post a card to him. So I decided to buy something. When I was in the department store. I found it was not easy for me to choose something right for him. Suddenly I
got an idea. I ran home and opened my computer. I made a beautiful card and mailed him through the Internet. then I began to make supper. When father came home, he was very glad to find a big meal on the table. then I asked him to check his e-mail. He was amazed to find a beautiful card in his e-mail-box.
What a wonderful surprise!
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