三角形的内角和的教学设计.doc

三角形的内角和的教学设计

一、 教学目标：
1.让学生通过个人、小组合作的方式亲自动手，在量、拼等活动中发现、证实三角形内角和是180°，并会应用这一知识解决生活中简单的实际问题。
2.让学生在鲜活的生活情境中学习，激发其探索欲望，在实践过程中，培养其创新能力和实践能力。
3.并通过动手操作把三角形内角和转化为平角的探究活动，向学生渗透“转化”数学思想。
4. 通过结论的证实、探究，让学生体验成功的喜悦，激发学生主动学习数学的兴趣。
二、重点、难点：
1、通过实践活动，使学生知道“三角形内角和是180°”这一知识的形成、发展和应用的全过程。
三、教学准备：
PPT课件、学具。
四、教学过程：
（一）故事导入：
1、课件出示“内角三兄弟之争”的故事，从而引出主题，对这一知识进行探索。
2、对“内角和”这一概念进行简单的理解。
（二）新授：
1、说说三角板的内角各是多少度？计算内角和是多少度？
2、猜想：任意三角形的内角和都是180度吗？
3、验证猜想：
（1）分三组，每组同学拿出事先准备的三角形（三组同学准备的三角形类型不同），各自量出三角形各个角的度数，并标明，再计算出内角和。
（2）汇报结果，答案不唯一。
（3）继续探究，用拼一拼的方法验证。
（4）汇报结果。
（5）课件演示验证过程和结果。
4、解决“内角三兄弟之争”的疑问。
（三）练习：
1、扫雷闪电战：详情见PPT课件。
2、愿意做老师的小帮手吗？（详情见PPT课件）
（四）小结：通过今天的学习你收获了什么？
（五）作业：详情见PPT课件。

教学反思：
这篇教学设计，符合新课程理念，转变学生的学习方式，能让学生以小组合作的形式进行问题的探索与研究，学生在整节课中学得轻松。整节课的教学设计，条理清晰，层次清楚，学生思维活跃，教学从设疑开始，让学生从熟悉的三角板抽象出特殊的三角形探讨三角形的内角和是180度,接下来很自然地引导学生探讨所有的三角形的内角和是不是也是180度，整个过程循序渐进，环环相扣。
在学习活动的过程中，先让学生进行测量、计算，但得不到统一的结果，再引导学生用“拼”的方法进行验证。这时，有部分学生在拼凑的过程中出现了困难，花费的时间较长，在这里用课件再演示一遍正好解决了这个问题。练习设计也是从生活入手，同时注意到练习的梯度，并由浅入深，照顾到不同层次学生的需求。
但是受到课本资源的限制，不能大胆突破教材，充分利用生活资源。

[论述题]

1．简述邓小平教育思想的主要特征；
2．简述党的十三大提出的“三步走”战略目标的内容。

参考答案：1．邓小平教育思想的主要特征有：教育的战略性；教育的时代性；教育的务实性；教育的阶级性；教育的适应性。
2．党的十三大提出的“三步走”战略目标的基本内容是：①第一步，从1981年到1990年，实现国民生产总值比1980年翻一番，解决人民的温饱问题。②第二步，到20世纪末，使人均国民生产总值再翻一番，人民生活达到小康水平。③第三步，到21世纪中叶，人均国民生产总值达到中等发达国家水平，人民生活比较富裕，基本实现现代化。
2：[单选题]1.邓小平教育思想是( )的重要组成部分
A：邓小平理论

B：毛泽东思想

C：马列主义

D：科学社会主义

参考答案：A
3：[单选题]2.邓小平抓政治上拨乱反正的一项重要工作是( )
A：推翻“两个估计”

B：批判“两个凡是”

C：强调实事求是

D：坚持调查研究

参考答案：B
4：[单选题]3.邓小平抓教育上拨乱反正的一项重要工作是( )
A：批判“两个凡是”

B：推翻“两个估计”

C：强调实事求是

D：坚持调查研究

参考答案：B
5：[单选题]4.恢复高考制度是( )
A：1976年

B：1977年

C：1978年

D：1979年

参考答案：B
6：[单选题]5.1985年5月19日，邓小平在全国教育工作会议上指出，一个十亿人口的大国，( )，人力资源的巨大优势是任何国家比不可的。
A：经济搞上去了

B：生产发展了

C：教育搞上去了

D：人民富裕了

参考答案：C
7：[单选题]6.邓小平指出，知识分子是( )的一部分
A：劳动人民

B：人民群众

C：工人阶级

D：无产阶级

参考答案：C
8：[单选题]7.1984年10月，中共中央作出了关于( )改革的决定
A：经济体制

B：教育体制

C：科技体制

D：政治体制

参考答案：A
9：[单选题]8.邓小平提出( )是第一生产力
A：科学技术

B：.经济建设

C：教育卫生

D：生产劳动

参考答案：A
10：[单选题]9.邓小平理论的精髓是( )
A：改革开放

B：发展才是硬道理

C：什么是社会主义，怎样建设社会主义

D：解放思想，实事求是

参考答案：D
11：[单选题]10.1929年，邓小平发动和领导了著名的( )
A：百色起义

B：秋收起义

C：广州起义

D：南昌起义

参考答案：A
12：[单选题]11.1997年9月12日，召开了中国共产党( )全国代表大会
A：第十四次

B：第十五次

C：第十四届五中全会

D：第十三次

参考答案：B
13：[单选题]12.学习邓小平教育思想的根本方法是( )
A：历史分析法

B：调查研究法

C：理论联系实际法

D：总结经验法

参考答案：C
1：[单选题]
The novelist and _____ is gong be invited too.

A：the poet

B：a poet

C：poet

D：poets

参考答案：C
2：[单选题]
I went to _____ bed to pick up some papers on it.

A：the

B：a

C： /

D：an

参考答案：A
3：[单选题]The lady ______ a blue dress is my aunt.
A：with

B：in

C：on

D：under

参考答案：B
4：[单选题]She is going to meet him ______ the school gate.
A：at

B：in

C：on

D：under

参考答案：A
5：[单选题]We should take care of ____ old and ___ sick.
A：the; /

B：/; the

C：the; the

D：/; /

参考答案：C
6：[单选题]He has worked for ____ hour.
A：a

B：an

C：the

D：/

参考答案：B
7：[单选题]He is cleverer than ______. He can do it better than ______.
A：me; me

B：I; me

C：me; I

D：I; mine

参考答案：C
8：[单选题]
Reading comprehension 2Reading comprehension 2
Many teenagers owe the pictures of some football stars because______.

A：they are interested in football

B：they are football fans

C：they think their favourite players are great

D：all of A, B and C

参考答案：D
9：[单选题]
Reading comprehension 2 Reading comprehension 2
From the passage, in the picture children drew many things except_________.

A： people playing football

B：pictures of some football stars

C： a sunny sky

D： flowers

参考答案：B
10：[单选题]
Reading comprehension 2Reading comprehension2
In “Dream World Cup”, the children drew the flags of some countries______.

A：to show their love for their owe country

B：to tell the people their stories

C：to show their good wishes for the football teams

D： to show their new ideas about football

参考答案：C
11：[单选题]
Reading comprehension 2 Reading comprehension 2
The next World Cup will be held in_______.

A：2006

B：2007

C：2005

D：2004

参考答案：A
12：[单选题]
Reading comprehension 2Reading comprehension 2
If a country wants to take part in the World Cup, she must have______.

A：Many football fans

B：a very good team

C：many football player

D：a big playground

参考答案：B
13：[单选题]
_______ as he is, jack could have made such a mistake.

A：A fool

B：Fool

C：The fool

D：Fools

参考答案：B
14：[单选题]
I don’t have any English books ______ this one.

A：for

B：without

C：except

D： from

参考答案：C
15：[单选题]
You’d better not _______ this in front of the fact.

A： ignore

B：deny

C： heed

D：say no

参考答案：B
16：[单选题]
People in a foreign country, sometimes, will lose their _________, not knowing who they are.

A：wonder

B：drought

C：mineral

D：identity

参考答案：D
17：[单选题]
His monthly expense _________ 350 dollars.

A：totals to

B：amounts as

C：adds up to

D：accounts as

参考答案：C
18：[单选题]
I didn’t ______ to hurt you.

A：mean

B： plan

C：arrange

D：intentionally

参考答案：A
19：[单选题]
There isn’t enough room for us, _______ six dogs and one cat.

A：not to say

B： not to mention

C：let it go

D：let alone

参考答案：D
20：[单选题]
It is said that the gas company will raise the gas fare _______ 4%.

A：by

B： for

C：from

D： to

参考答案：A
21：[单选题] It has been raining ______ last Saturday.
A：on

B： for

C：till

D： since

参考答案：D
22：[单选题]The little girl ______ red is very lovely.
A：with

B：on

C：in

D：of

参考答案：C
23：[单选题]
He is in a difficult situation as all the public opinions are ________ him.

A：with

B：for

C：toward

D：against

参考答案：D
24：[单选题]
1. The professor asked us to write a _____________ report.

A：two-hundreds-words

B：two-hundreds-word

C：two-hundred-words

D：two-hundred-word

参考答案：D
25：[单选题]
You are not ______ anyone in any aspect.

A：inferior to

B： inferior than

C：more inferior

D：less inferior than

参考答案：Reading comprehension 3 Reading comprehension3
Mr. Hill taught ______.

A：Jack Smith French at the No. 2 High School

B：Jack Smith to be a first officer

C：at the No.2 High School, in France

D：French some years ago and his name was Smith, not Hill

参考答案：D
2：[单选题]
Reading comprehension 3Comprehension 3
The second officer says that ______.

A：Mr. Hill stole the painting

B：a man with a beard, from France, stole a painting in English

C：an Englishman took his beard off and stole a painting

D：a man with a beard, from England, stole a painting in Paris

参考答案：C
3：[单选题]
Reading comprehension 3 Reading comprehension 3
The first officer is sure ______.

A：Mr. Hill stole the painting

B：he has seen the face in the photo before

C：he knows the second officer’s face

D：a man without a beard stole the painting

参考答案：B
4：[单选题]
Reading comprehension 3Reading comprehension 3
According to the text, Mr. Hill ______.

A：has a beard on his face but not in his photo

B：grew a beard while he was on holiday

C：has a beard in his photo but not on his face

D：took his beard off long before he went on holiday

参考答案：A
5：[单选题]
Reading comprehension 3Reading comprehension 3
Mr. Hill ______.

A：has just come back from the airport

B：is on his way to Paris

C：spent three weeks in Paris before he went to France

D：has been in France for three weeks

参考答案：C
6：[单选题]
Many good friends have a lot in _______.

A：similarity

B：difference

C：common

D：usual

参考答案：C
7：[单选题]
You will get the message ______.

A：not long after

B：not long

C：before long

D：long before

参考答案：C
8：[单选题]
The home team ______ dearly for their defensive errors.

A：cost

B： took

C：paid

D：gave

参考答案：C
9：[单选题]
The doctor came at once in _____ to my call.

A：reply

B：answer

C：hearing

D： listening

参考答案：B
10：[单选题]
I wish he would ______ his own business.

A：care

B：look

C：take

D：mind

参考答案：D
11：[单选题]
The building which _____________ at present will be used for science

A： is repairing

B：has been repaired

C： is being repaired

D： is repaired

参考答案：C
12：[单选题]
Mr. Smith asked Nancy ________ it took him to fly to New York.

A：how soon

B：how often

C：how long

D：how far

参考答案：C
13：[单选题]
They are all _________ at the _______ news.

A：exciting; excited

B：excited; exciting

C： exciting; exciting

D：excited; excited

参考答案：B
14：[单选题]
This room is three times _________ that one.

A：the same large

B：larger as

C：as large as

D：almost large as

参考答案：C
15：[单选题]
I hope you would come to my party _________ Saturday.

A：the next

B：the last

C： next

D：last

参考答案：C
16：[单选题]
. The young man was _________ middle height.

A：with

B：at

C：of

D：on

参考答案：C
17：[单选题]
Have you found an answer ________ the question?

A：of

B：for

C：on

D：to

参考答案：D
18：[单选题]
We will try again ____________ the failure.

A： in spite

B：in spite of

C： despite of

D：spite

参考答案：B
19：[单选题]
She went away ________ saying a word.

A：by

B：without

C：out of

D：as

参考答案：B
20：[单选题]
He was criticized ________ his mistakes.

A：on

B：with

C：of

D：for

参考答案：D
21：[单选题]
He prefers white cup to _________.

A： red

B：red one

C： the red

D：the red one

参考答案：B
22：[单选题]
My teacher today is not quite __________.

A：his own

B：him

C：himself

D：of his own

参考答案：C
23：[单选题]
There are trees on __________ side of the street.

A：any

B：both

C： either

D：every

参考答案：C
24：[单选题]
Last Saturday ___________________ had a picnic in BeiquanPark.

A：John, Mary and me

B：John, Mary and I

C：John, I and Mary

D： I, John and Mary

参考答案：A
25：[单选题]
Here are a few apples. Would you like to have _____________?

A：ones

B：some ones

C：one

参考答案：C
AReading comprehension 4 Reading comprehension 4
This passage tells us_____________.

A：how photography was developed

B： how to show your ideas and feelings in pictures

C：how to take pictures in the world

D：how to use different cameras

参考答案：A
2：[单选题]
Reading comprehension 4 Reading comprehension 4
Mathew Brady______________.

A：was very lifelike

B：was famous for his unusual pictures

C：was quite strong

D：took many pictures of moving people

参考答案：B
3：[单选题]
Reading comprehension 4 Reading comprehension 4
If a photographer wanted to take pictures of moving things in the year of 1840j, he had to__________.

A：watch lots of films

B：buy an expensive camera

C：stop in most cities

D：take many films and something else with him

参考答案：D
4：[单选题]
Reading comprehension 4 Reading comprehension 4
The Daguere type was____________.

A：a Frenchman

B：a kind of picture

C：a kind of camera

D：a photographer

参考答案：B
5：[单选题]
Reading comprehension 4 Reading comprehension 4
The first photo taken by Niepce was a picture of ____________

A：his business

B：his house

C：his garden

D：his window

参考答案：C
6：[单选题]
We invited him to the party the next weekend, but he _____ the invitation.

A：refused

B：returned

C：declined

D：threw back

参考答案：C
7：[单选题]
Unwise decisions will lead to _________ results.

A：unexpective

B：disastrous

C：desired

D：unreasonable

参考答案：B
8：[单选题]
The Great Wall in China is one of the ______ in the world.

A：amazings

B：sceneries

C：wonders

D：strange things

参考答案：C
9：[单选题]
The natural beauty in Jiuzhaigou will ______ your breath away when you visit it for the first time.

A：bring

B：get

C： take

D： frighten

参考答案：C
10：[单选题]
We ______ them not to go skating on such thin ice.

A：reply

B：remind

C：warn

D： recall

参考答案：C
11：[单选题]
One day a poor man ____ his horse to a tree, and sat down to eat his lunch.

A：closed

B：tyed

C： tied

D：lied

参考答案：C
12：[单选题]
The dancer and ______ has arrived already.

A：singer

B： a singer

C：the singer

D：singers

参考答案：A
13：[单选题]
The prisoner _____ the charges against him.

A： not believe

B：opposed

C：declined

D：denied

参考答案：D
14：[单选题]
His honesty is ____________. He can be always trusted.

A：out of question

B：out of the question

C： not the question

D：in the question

参考答案：A
15：[单选题]
There is a truck ______ the classroom.

A：in the front of

B： in front of

C：in front

D：at the front of

参考答案：B
16：[单选题]
I’ll never forget _____ of 1983 when I entered the college.

A： a summer

B：summer

C：the summer

D：summers

参考答案：C
17：[单选题]
It is said that the gas company will raise the gas fare _____ 4%.

A：by

B：for

C： from

D： to

参考答案：A
18：[单选题]
He will graduate from this university ______ two years.

A：after

B：in

C：during

D：for

参考答案：B
19：[单选题]
I would like to give you my best wishes ______ this happy occasion.

A： in

B：with

C：on

D： over

参考答案：C
20：[单选题]
The exam will be held _____ the end of the term.

A：in

B： at

C： during

D：on

参考答案：B
21：[单选题]
There is an old temple______ the foot of the mountain.

A： at

B：under

C：below

D：on

参考答案：A
22：[单选题]
Please divide the work ______ the two of you.

A： into

B：among

C：between

D：of

参考答案：A
23：[单选题]
England and America are ________ in many ways.

A： like

B： alike

C：alive

D：likewise

参考答案：B
24：[单选题]
After a long walk on a hot day, one often feels _________.

A：exhaustive

B：exhausting

C：exhaust

D：exhausted

参考答案：D
25：[单选题]
It isn’t quite _______ that he will be present at the meeting.

A：sure

B：bright

C：certain

D： exact

参考答案：C

Reading comprehension 5 Reading comprehension 5
Motor homes have become popular because___________.

A：they can take people to another city when people are free

B： they can let families have a happier life when they go out for their holidays

C：some people think motor homes are cheap

D：big families can put more things in motor homes

参考答案：B
2：[单选题]
Reading comprehension 5 Reading comprehension 5
Americans usually use motor homer____________.

A：to travel with all the family members of holiday

B：to do some shopping with all the family members

C：to visit their grandparents at weekends

D：to drive their children to school every day

参考答案：A
3：[单选题]
Reading comprehension 5 Reading comprehension 5
A motor home is usually owned by a family with__________.

A： a baby

B： much money

C：more than two children

D：interest in vans

参考答案：C
4：[单选题]
Reading comprehension 5 Reading comprehension 5
Before Mr. Hagen an