三年级第二学期作文

2024-07-21

三年级第二学期作文（精选6篇）

三年级第二学期作文篇1

生活中，有时候爸爸妈妈都不在家，有些事情要自己思考，找出解决得办法，从而总结出道理。

记得有一次，我一个人在家，看到电视上有一位小男孩，做了一个美丽的不倒翁，我的心痒痒也想做一个。

做不倒翁的材料有：一个鸡蛋。一根针和一支尖尖的铅笔。准备好后，我开始做不倒翁了。首先用针把鸡蛋戳一个小洞，但因为我戳得特别用力，一下子鸡蛋就粉身碎骨了，蛋清蛋黄流出来，好像很想出来看看世界。经过这次教训，我又重新拿来一个鸡蛋，这次我小心翼翼的戳出小洞，但是由于洞太小，蛋清和蛋黄不能流出来，怎么办呢？我灵机一动想到一个好办法：针不可以，那铅笔呢！我拿来铅笔轻轻一戳，戳出了一个比原先大一点的洞口，我把里面的蛋清和蛋黄都掉了出来，然后放百分之八十的沙子，这样不倒翁就大概成型了。我要把不倒翁装扮漂亮，所以在鸡蛋表面画了眼睛。鼻子和嘴巴，鸡蛋底端画上领子，这样我的不倒翁就完成了。

听了我的介绍，你们也感兴趣吧，也可以动手做一做哦！

三年级第二学期作文篇2

2. 卷I答在自行准备的答题卡上;答卷Ⅱ时, 将答案直接写在试卷上。

卷I (选择题, 共70分)

听力部分 (1×20分)

Ⅰ.听句子, 选出句子中所包含的信息。

1. A. pull B. push C. watch

2. A. 8654905 B. 8654095 C. 6854905

3. A. sit down B. look down C. come down

4. A. I was better. B. I was sick. C. I was full.

5. A. The teacher needs help

B. The teacher is in the office.

C. Someone is taking the books to the office.

Ⅱ.听句子, 选出该句的最佳答语。

6. A. All right. B. Me, too. `C. You’re welcome.

7. A. A little, please! B. Tea, please. C. Yes, please.

8. A. That’s true. B. Let’s go. C. Oh, have fun!

9. A. It’s interesting. B. It’s delicious. C. It’s boring.

10. A. It’s sunny. B. I’ll take it. C. I hope so.

Ⅲ .听对话及问题, 选择正确答案。

11. A. A red skirt. B. A white shirt. C. A white skirt.

12. A. To a zoo. B. To a lake. C. To a mountain.

13. A. It’s summer. B. It’s autumn. C. It’s winter.

Ⅳ. 听短文、对话和问题, 选择正确答案。

16. What is Mrs. Li doing when it begins to rain?

A. Talking with others. B. Working in the fi elds. C. Shopping with her friends.

17. How do people feel when they see Mrs. Li?

A. Happy. B. Surprised. C. Nervous.

18. How do animals and men get their food?

A. By drinking water. B. By enjoying air and sunlight. C. By eating plants and other animals.

19. What do the fl owering plants have?

A. Roots, stems, leaves and fruits.

B. Roots, stems, leaves and fl owers.

C. Roots, stems, leaves, fl owers and fruits.

20. How many non-fl owering plants can you see around us?

A. Few. B. No one. C. A lot.

笔试部分 (50分)

V.单项选择 (1×20分)

21. Would you like _________ water?

A. a B. an C. any D. some

22. Mary, keep away from the fi re, _________ you will get burnt.

A. or B. so C. but D. and

23. There are _________ apples in the basket.

A. little B. a little C. much D. a few

24. Can you see the boy _________ on the grass?

A. lied B. lies C. lying D. to lie

25. How does this weather make him _________?

A. feels B. feel C. feeling D. to feel

26. _________ is diffi cult to climb the tall tree.

A. It B. This C. That D. One

27.–My daughter ate a lot of ice cream.

–Yes, _________.

A. so did she B. so she did C. so she was D. so was she

28. Thank you for _________ the show.

A. join B. joins C. to join D. joining

29. Neither he nor I _________ wrong.

A. be B. is C. am D. are

30. Sometimes Kate _________ skating in winter.

A. go B. goes C. going D. gone

31. He has been in China _________ two years.

A. since B. for C. at D. to

32. _________ sleep too late. It’s bad for your health.

A. Do B. Don’t C. Not D. Please not

33. _________ people visited China for the 2008 Olympic Games.

A. Million B. Millions C. Millions of D. Million of

34. It is not a good place for an animal _________.

A. lives in B. live in C. to live D. to live in

35. When somebody is in _________, you should help him.

A. danger B. dangerous C. safe D. safety

36. –_________ did you stay there?

–We stayed there for about fi ve years.

A. How much B. How often C. How long D. How far

37. The sun _________ when we got to the top of the mountain.

A. rise B. rose C. was rising D. is rising

38. –_________ we meet at the park at 7 o’clock?

–OK! See you later!

A. Can B. Shall C. Must D. Do

39. The children _________ the farm tomorrow, aren’t they?

A. visited B. will visit C. would visit D. are going to visit

40. If you __________, you’ll improve yourself soon.

A. study hard B. will study hard C. don’t study hard D. won’t study hard

Ⅵ.完形填空 (1×10分)

41. A. worse B. worst C. better D. best

42. A. on B. at C. in D. from

43. A. a little of B. a few of C. many D. much

44. A. make B. made C. makes D. making

45. A. slow B. slowly C. quick D. quickly

46. A. move B. moves C. moved D. moving

47. A. faster B. higher C. fast D. high

48. A. call B. called C. calling D. calls

49. A. in the front of B. in the middle of C. at the back of D. on the top of

50. A. Another `B. Other C. The others D. The other

Ⅶ.阅读理解 (2×10分)

The sun is always shinning. But it can only shine on one side of the earth at a time. When the sun is shinning on one side of the earth, it is night on the other side.

At night, you can see the stars. The stars are in the sky all day. But the light from the sun is so bright that you can’t see them in daytime. When nights come, there is no light, and the stars are bright enough to see. The stars look very small. But some of them are even bigger than the sun. They look small because they are so far away from you. Big things look much smaller when they are far away. The sun is closer to the earth than other stars, so it looks bigger.

51. When it is night, the sun ____________.

A. doesn’t shine B. shines for a short time

C. disappears ( 消失 ) D. shines on the other side of the earth

52. We can’t see the stars in the sky in daytime because ___________.

A. there are no stars there

B. the stars are much smaller than the sun

C. the bright light from the sun makes them not seen

D. the stars come out only at night

53. The stars look small because they ____________.

A. are far away B. are small C. have no light D. are in the sky

54. Small things may look ____________ when they are closer.

A. bigger B. small C. near D. far away

55. The sun looks bigger than other stars because ____________.

A. it’s bigger B. it’s far away in the sky

C. it gives much bright light D. it’s closer to the earth than other stars

People’s likes and dislikes are different, so they have different ambitions. Now let’s look at the following characters’ likes, dislikes and ambitions.

56. What does Jim want to be?

A. A worker or a teacher. B. A model or an accountant.

C. A salesman or a detective. D. A doctor or a social worker.

57. Who doesn’t enjoy working in the same place?

A. Larry. B. Anita. C. Jill. D. Maria.

58. Who wants to be a teacher or a nurse?

A. Anita. B. Jill. C. Maria. D. Jim.

59. Which of the following is TRUE?

A. Jim likes working nights and weekends. B. Jill doesn’t like being in noisy places.

C. Maria enjoys wearing different clothes everyday. D. Anita really likes doing things with her parents.

60. What does the underlined word“stand”mean in the passage?

A. 忍受B. 站立C. 理解D. 想象

八年级第二学期期中考试

八年级英语听力部分

考生注意:该试卷听力部分共有四道大题。请你听完录音后将所选答案的对应标号填入答题纸上相应的位置。 (停顿5秒……)

现在是听力试音时间。 (停顿5秒……)

W: How do you do?

M: How do you do?

W: What’s your name?

M: My name is Tom.

W: How old are you?

M: I’m 13 years old.

试音到此结束。 (停顿2秒……) 听力测试现在正式开始。

第一题 : 听句子 , 选出句子中所包含的信息 . 下面你将听到五个句子 , 每个句子读两遍。请你听完句子的第二遍朗读后, 从各小题所给出的A、B、C三个选项中, 选出包含所听信息的选项。 (每句重复间隔2秒, 每题间隔6秒)

No.1. Let’s push the chair under the desk.

No.2.We can meet on the Internet. My QQ number is 8654905.

No.3. It’s dangerous in the tree. Please come down.

No.4. I went to the doctor and he gave me some medicine.

No.5. Well, I really need someone to take these books to my offi ce.

第二题:听句子, 选出该句的最佳答语。下面你将听到五个句子 , 每个句子读两遍。请你听完句子的第二遍朗读后, 从各小题所给出的A、B、C三个选项中, 选出该句的最佳答语。 (每句重复间隔2秒, 每题间隔6秒)

No.6. Thanks for helping me.

No.7. Which do you prefer, tea or coffee?

No.8. It’s a nice day. I’m going out with Allen this afternoon.

No.9. Why do you like science?

No.10. What’s the weather like today?

第三题:听对话及问题, 选择正确答案。下面你将听到五组对话和问题 , 每组对话和问题读两遍。请你听完对话和问题的第二遍朗读后, 从各小题所给出的A、B、C三个选项中找出正确答案。 (每组重复间隔2秒, 每题间隔10秒)

No.11. M: What should I get my sister for her birthday?

W: You can get her a skirt.

M: What a good idea! I could give her a white one.

Q: What will the man give his sister for her birthday?

No.12. M: What fi ne weather! Let’s go somewhere today!

W: Good idea. But where shall we go? The zoo?

M: No. I don’t want to go there. How about boating on the lake?

W: OK. Don’t forget to take your cap and sunglasses.

Q: Where will they go?

No.13. M: What about going out and making a snowman with me, Jenny?

W: Why not? I’d love to. When? Right now? I can’t wait.

Q: What season do you think it is now?

No.14. W: Bill, look at that cup with three legs. It’s strange.

M: Yes, it’s very beautiful. Let me take a picture of it.

W: No. Look at that sign. I don’t think it is allowed here.

M: OK, I won’t.

Q: Which sign did they see?

No.15. M: Would you like something to eat?

W: Yes, please.

M: What would you like, bread or hamburgers?

W: Neither. I only want sandwiches.

Q: What does the woman want to eat?

第四题:听短文, 选择正确答案。下面你将听到两篇短文和五个问题, 短文和问题读两遍。请你听完短文和问题的第二遍朗读后, 根据其意思, 从各小题所给出的A、B、C三个选项中, 找出正确答案。 (每组重复间隔2秒, 每题间隔12秒)

下面请听第一篇短文并回答第16—17题。

Mrs. Li is growing vegetables in the fi elds. Soon it begins to rain. Mrs. Li stops working and wants to go back home. Just then she sees her son Xiaohan running to her with something. It is her raincoat! But Xiaohan forgot to bring his own raincoat. They have to go home in one raincoat. Some people are surprised when they see Mrs. Li and four feet. When Xiaohan comes out of the raincoat and says “hello”, they all laugh.

Question No.16. What is Mrs. Li doing when it begins to rain?

Question No.17. How do people feel when they see Mrs. Li?

下面请听第二篇短文并回答第18—20题。

Animals and men get their food by eating plants and other animals. Plants can make food from air, water and sunlight. There are two main kinds of plants: flowering plants and non-flowering plants. Flowering plants have roots, stems, leaves, fl owers and fruits. Almost all the trees around us are fl owering plants. So we can see few non-fl owering plants around us.

Question No. 18. How do animals and men get their food?

Question No. 19. What do the fl owering plants have?

Question No. 20. How many non-fl owering plants can you see around us?

三年级第二学期作文篇3

1.There are a great number of styles ____, but I am at a loss which

to buy.

A. to be chosenB. to choose from

C. to chooseD. for choosing

2.The old man kept all the children around him ____ with his stories.

A. amuseB. amusingC. amusedD. to amuse

3.——Do you think it’s going to be sunny over the weekend?

——____. It is raining all these days.

A. I don’t believeB. I don’t believe it

C. I believe not soD. I believe not

4.I ____ Mr. Johnson’s house, but he wasn’t in. Then I ____ him, but I couldn’t get through either.

A. called at, called onB. called on, called at

C. called at, called upD. called on, called on

5.He didn’t answer my phone. He ____ asleep.

A. must beB. must have been

C. should beD. may be

6.In order to improve listening, ____.

A. Mary bought a lot of tapes for herself

B. Mary’s father bought her a lot of tapes

C. a lot of tapes were bought by Mary

D. a lot of tapes were bought by Mary’s father

7. ____ role she played in the class!No wonder she has been elected

as the monitor for so many years.

A. How importantB. How an important

C. What importantD. What an important

8. ——The light in the office is still on.

——Oh, I forgot ____.

A. turning it offB. turn it off

C. to turn it offD. having turned it off

9.The director had him ____ the hero in the film all the time,

____ made him a deep impression.

A. act as, thatB. to act, which

C. acting as, whichD. acting as, it

10. I think ____ important ____ my spoken English half an hour a day.

A. this; practiseB. it; to practise

C. this; to practiseD. it; practicing

11. The ancient coins are well worth ____.

A. collectB. being collected

C. collecting D. to collect

12.I will do ____ I can to help you. I won’t ____ your trouble.

A. whatever; add toB. what; add up to

C. as; add toD. what; add up

13.To his surprise, he found himself ____ in the direction of the

countryside.

A. walkB. walkingC. walkedD. to walk

14.It was ____ I arrived there ____ I heard about the terrible traffic

accident.

A. until, whenB. until, that

C. not until, thatD. not when, that

15. They put the plants in the greenhouses so that they ____ the cold

weather.

A. protected fromB. prevented from

C. were protected fromD. were prevented from

16. I soon realized that what I was doing has already been finished by

someone else. ____, I was wasting my time.

A. In a wordB. What’s more

C. By the wayD. In other words

17. I came into ____ with all kinds of people in my work.

A. contractB. contactC. attractD. attack

18. ____ finished my homework, I asked my brother ____ interrupt.

A. Having not, not toB. Having not, to not

C. Not having, to notD. Not having, not to

19. Our country now is trying to ____ more advanced technical

information from abroad to develop economy.

A. bring aboutB. bring inC. bring outD. bring back

20. You like music, ____ I’d rather read.

A. while B. since C. when D. as

Ⅱ.完形填空

__1__ the past hundred years, the railway, the car, the radio, the cinema and now the TV, have produced very great __2__ in the amusement(娱乐活动) with which people pass their __3__ time.

A __4__ years ago, people were in the habit of making their own amusements. When a group of people __5__ together, they talked, played cards or __6__ games, read aloud to each other, or went __7__ riding,shooting or walking. Most people could sing __8__, or play the piano, so at a party the guests amused each other. Above all, conversation was an art: amusing conversation could __9__ people happy for hours.

As for games __10__ football and tennis, people were also in the habit of playing __11__ themselves. Most of them did not play very well, but they amused themselves and their friends. Nowadays we are amused__12__ professional(专业的) singers or players. __13__ listen to your friends __14__ when you can hear the great singers of the world __15__the radio or on TV? Why play football with players who __16__ very good at it when you can see some of the best players playing an important match? You may just sit comfortably __17__ and watch the game __18__ the trouble of going outside.

The art of conversation and the habit of playing and singing are dying: people are becoming more and more lookers and listeners, and __19__ doers and talkers. This change does people more harm than good; it is better to do something not very well oneself than __20__ to sit and watch others doing it.

1. A. OnB. AtC. AfterD. During

2. A. singerB. pleasureC. changesD. danger

3. A. busy B. free C. workD. day

4. A. hundredB. thousandC. centuryD. few

5. A. cameB. putC. gotD. worked

6. A. otherB. the otherC. anotherD. else

7. A. out B. onC. insideD. to

8. A. littleB. a littleC. lot D. a lot

9. A. made B. bringC. letD. keep

10. A. such asB. for exampleC. likeD. for

11. A. itB. themC. that D. ones

12. A. ofB. byC. inD. on

13. A. WhyB. Why notC. What aboutD. How about

14. A. sayingB. talkingC. playingD. singing

15. A. fromB. inC. byD. over

16. A. is notB. are notC. isD. are

17. A. at homeB. at a cinemaC. at schoolD. at a hospital

18. A. withB. inC. withinD. without

19. A. muchB. littleC. moreD. less

20. A. sometimesB. usuallyC. alwaysD. never

Ⅲ.阅读理解

(A)

Crosstalk is a kind of Chinese two-person stand-up comedy. Comedy has a comparatively small role, song and dance. The crosstalk comedy was really easy to understand and quite entertaining. As early as the Qin Dynasty, the traditional crosstalk shows had made people all over China roar with laughters for centuries. To the Song Dynasty, there had been many forms and this kind of art had been perfect.

Crosstalk show is very typical for China. The artists play on words, together with body language. They also perform in different forms, such as talking, learning a certain kind of skill, amusing, and tongue twister. Skilled artists make use of all the richness of the spoken language to create a rapid flow of fun. The funny performances always make the audience applaud. In China, there are many famous crosstalk artists, such as Hou Baolin, Hou Yaowen, Niu Qun and Feng Gong, Li Guosheng and Xiao Lin and so on. There is also a famous crosstalk show artist from abroad that is Dashan from Canada.

“Dashan” is the stage name of Mark Rowswell, a Canadian performer in China. Almost unknown by his English name, Dashan is the most famous foreigner in China. He has become a regular fixture on Chinese television and a cultural icon across the nation. Ask anyone in Mainland China—8 out of 10 will be able to tell you who Dashan is.

For the past 17 years Dashan has been appearing on Chinese television to audiences as large as 800 million viewers. Dashan first made his name performing xiangsheng, a traditional form of Chinese comic dialogue often translated as “crosstalk”, which Rowswell began study in 1988 while at Peking University. Dashan still makes guest appearances during the holiday season to perform comedic skits, but more as a hobby than a profession.

1.According to the passage, which of the following statements is wrong?

____.

A. Crosstalk is a typical art form in China

B. Crosstalk performance has many different forms

C. Crosstalk shows often make audience laugh or cry

D. Crosstalk is often performed by two persons

2.____ is not the form of crosstalk performance.

A. TalkingB. SingingC. Tongue twisterD. Magic

3.The first two paragraphs mainly tell us that ____.

A. crosstalk is a typical Chinese two-person stand-up comedy that

brings happiness

B. Dashan is successful at crosstalk performance

C. the crosstalk artists play on words, together with body language

D. in China, there are famous crosstalk artists, such as Hou Baolin,

Hou Yaowen and so on

4. Dashan, a Canadian performer in China, ____.

A. is the most famous crosstalk show artist in China

B. has been a household name in China

C. is known by his English name Mark Rowswell by 88 percent of

Chinese.

D. began studying crosstalk from 15 years ago in Peking University

5.The correct order of the following events is ____.

a. Dashan has become the most famous foreigner across the whole

nation

b. Dashan began to perform on Chinese television

c. Dashan began learning crosstalk while at Peking University

d. Dashan attracted about 800 million viewers

A. b-a-c-dB. c-d-b-aC. b-c-d-aD. c-b-d-a

(B)

David Brown and Anne are two patients in the Adult Day Care Program at Merey Hospital． David Brown is seventy-two years old． He’s friendly and likes to talk． He lives with his wife in the city． But David is becoming forgetful． His wife says， “He’ll heat up some soup， then forget to turn off the gas．” She is sixty-one and still works． She is worried about leaving her husband alone by himself.

Anne is eighty and lives with her daughter， who is sixty． Her daughter says that she needs a rest， “Mom follows me everywhere． She follows me from room to room when I clean． She sits down next to me when I read the newspaper． I need a rest and she does， too．”

三年级信息技术教案-第二学期篇4

教学目的和要求：

1、认识Windows窗口，了解窗口的组成。

2、掌握窗口的基本操作。

3、初识菜单命令。

4、进一步掌握鼠标器的基本操作方法。

教学重点与难点：

1、重点：窗口的基础知识和基本操作。

2、难点：菜单命令。

教学准备：

1、计算机、网络及辅助教学软件。

2、自制的Powerpoint教学软件教学过程：

一、新课导入

同学们，上节课，陈老师和大家一起学生了Ｗindows98的最基本知识，大家还记得我们讲了那些内容吗？

二、新课教学

（一）、窗口的组成

我们知道，在Windows环境下的所有应用程序都是在窗口中执行的，关闭窗口，也就关闭了程序。

下面我们就来一起认识一个最常见到的窗口，它具有Ｗindows窗口的许多共同特点。（师给出一张“我的电脑”的图，同时就着图讲解，过程中注意突出最大化按钮和还原按钮的区别。

（二）、窗口的基本操作

1、最小化窗口

下面我们就来看看刚才讲过的窗口右上角的那三个按钮的作用。先来看最小化按钮的作用（师做示范操作）。让学生自己练习一下，同时找学生做给其它学生看。

2、最大化（还原）窗口

让学生自己试，然后总结得出：单击“最大化”按钮，窗口会扩大到整个屏幕，此时“最大化”按钮变成了“还原”按钮；单击“还原”按钮，窗口恢复原状。

3、切换窗口

师打开两个窗口，请同学观察两个窗口的标题条有什么不同（生答），师给出当前窗口的概念：把标题栏呈深颜色的窗口称为当前窗口。单击任务栏中的某个窗口的图标按钮，就可以切换为当前的窗口（师作操作）。学生自己试。

4、移动窗口

师作讲解：指针指向“我的电脑”窗口标题栏，进行拖动操作，可以移动窗口。

5、改变窗口的大小

下面请同学们观察老师的鼠标指针的形况是什么样子的（）。对，当指针成这种形状的时候我们只要向左右拖动就可以改变窗口的宽度。

那么我们又怎么来改变窗口的高度呢？下面老师想请同学来完成这个任务。（请同学来操作）。

师把鼠标的指针形状变为，提问：有谁知道老师现在这种指针能改变窗口的什么大小（生答，师总结，能同时改变高度和宽度。）

6、关闭窗口

有没有同学知道怎么关闭窗口（生答单击“关闭”按钮，窗口关闭。）

（三）、菜单命令

打开“我的电脑”，以“编辑”命令为示范作讲解。（1）以颜色看；（2）以后面的符号看

（四）、窗口的滚动

教师做演示，学生自己练习。全课总结

三年级第二学期教学计划篇5

二〇一三年二月二十八日

三年级下册数学教学计划

新学期开始了,为了切实做好教学工作，提高教学效果，有计划、有步骤地完成三年级数学的教学任务，结合学生实际和知识经验，特拟定了以下的教学计划。

一、学生情况分析

本学期我所任教的三班46人，四班43人，大部分学生对数学比较感兴趣，接受能力较强，学习态度较端正，学习基础也比较好；但是有部分学生学习习惯不太好，基础较差，学习散慢，缺乏学习的自觉性主动性，习惯也不好，不能及时完成作业，或者作业质量较差，对于学习数学有一定困难。如：三班的雒涛、潘昊；四班的梁舜、吕文彬、罗金斗等这几个同学，其理解能力较差，做题的速度也慢，加之家庭教育也不能和学校教育相配合，学习成绩只能在及格的边缘徘徊，学习习惯还未形成。所以在新的学期里，在端正学生学习态度的同时，应加强培养他们的各种学习数学的能力，以提高成绩。

二、教学内容分析

本册教材包括下面一些内容：除数是一位数的除法，两位数乘两位数，小数的初步认识，位置与方向，面积，年、月、日，简单的数据分析和平均数，用数学解决问题，数学广角和数学实践活动等。其中除数是一位数的除法、两位数乘两位数、面积以及简单的数据分析和平均数是本册教材的重点教学内容。

数与代数：第一单元“元、角、分与小数”。结合购物的具体情境初步理解小数的意义，能认、读、写简单的小数；感受比较小数大小的过程；会进行一位小数的加减运算，能解决一些相关的简单问题；能运用小数表示日常生活中的一些事物，并进行交流。第三单元“乘法”。会计算两位数乘两位数的乘法；能结合具体情境进行估算，并解释估算的过程；能灵活运用不同的方法解决生活中的简单问题，并能对结果的合理性进行判断。第五单元“认识分数”。能结合具体情境与直观操作初步理解分数的意义，能认、读、写简单的分数；感受比较分数大小的过程；会计算同分母分数的加减运算，能解决一些相关的简单问题。

空间与图形：第二单元“对称、平移和旋转”。结合实例，感知平移、旋转、轴对称现象；能在方格纸上画出一个简单图形沿水平、竖直方向平移后的图形；通过观察、操作，认识轴对称图形，并能在方格纸上画出简单是轴对称图形。第四单元“面积”。结合实例认识面积的含义，能用自选单位估计和测量图形的面积，体会统一面积单位的必要性，体会并认识面积单位，会进行简单的面积单位的换算；探索并掌握长方形、正方形的面积公式，能估算给定的长方形、正方形的面积。

统计与概率：第六单元“统计与可能性”。通过丰富的实例，了解平均数的意义，体会学习习近平均数的必要性，会求简单数据的平均数；能对一些简单事件发生的可能性做出描述，并和同伴交换想法。

实践活动：到商店调查三种商品的价格，做好记录。与同学比一比同一种商品的价格。找一找生活中的小数，并与同伴说一说。用纸剪出一个你喜欢的图形，通过平移或旋转绘制一幅图案。设计旅游计划。厨房铺地转的选择方案制作七巧板。调查小组同学的身高，并计算小组的平均身高，并计算小组的平均身高。在报刊上找出与平均数有关的信息，并与同伴说一说。

三、教学措施：

1.努力钻研教材，认真学习教学大纲，加强自身学习，不断提高自身素质。表扬先进，鼓励差生，积极调动学生积极性，全班平衡发展。

2.加强常规训练，加强口算训练，提高口算能力。将计算作为解决问题的一个组成部分进行教学，让学生进一步体会计算是帮助人们解决问题的工具，逐步形成──面对具体问题，先确定是否需要计算，再选择合适的计算方法（口算、估算、笔算等），最后应用计算达到解决问题的目的──这样一种思维方法。

3.重视形象直观教学。培养学生的观察能力和思维能力，有意识的逐步培养学生分析推理能力。创设丰富的便于操作的实践活动情境，使学生亲身体验方位的知识，感受方位知识与日常生活的密切联系。

4.利用学生已有的知识学习新的统计知识──了解不同形式的条形统计图，介绍平均数的概念以及求平均数的方法；结合实际问题，进一步教学根据统计图表进行简单的数据分析，作出合理的推断。

5.让学生通过小组合作探究，综合运用所学的数学知识，动手实践解决数学问题，培养学生的实践能力和解决问题能力。

6.让学生通过观察、操作、实验、猜测、推理与交流等活动，初步感受数学思想方法的奇妙与作用，受到数学思维的训练，逐步形成有序地、严密地思考问题的意识。

7.提供丰富的培养情感、态度、价值观的素材。激励他们扩充知识面和进一步探索研究的兴趣与欲望，并通过这些活动获得自己成功、能力增强等良好体验，从而逐步增进学好数学、会用数学的信心。

四、培优补差措施：

1.制订培优补差计划，确定培优补差的学生名单和辅导时间，并及时告之于学生及家长。

2.培优：利用书、报等材料扩大学生知识面，培养学生灵活的思维及发展多种能力，以满足他们特殊的发展需要；补差：为一些学习有困难的学生提供，帮助他们查漏补缺，弥补基础知识的不足，在补差的同时提高学生的分析能力和理解能力。

3.精心准备培优补差的辅导内容，保证每次的辅导质量。同年段老师可以经常交流培优补差心得，共同提高。