腊月二十六-搞笑小品大全剧本

these precious and worth cherishing. Second, scientific research situation, grasp the opportunities and challenges of transformation and upgrading of full completion of the n-Fives crucial. Focused grand blueprint, must to history of thinking views trend, put associate times forward of pulse, stepped on associate economic law of drums, find associate transformation upgrade of path, in grasp macro trend in the advance science development; to strategy of vision conspiracy to global, always tight buckle national macro policy oriented, accurate grasp County love actual, based overall caught opportunities, and PCT thought, ensure County economic social development always along right track continued forward; to precision of measures seeking breakthrough, tightly pegged focus task and bottleneck restricted, Science and identify practical and effective measures, advance breakthrough, ensuring all tasks carry out to the letter; based on scientific assessment and
strict implementation, persist in combining routine supervision and centralized supervision, accurate assessment Township departments, strictly cash rewards, prompted the departments own implementation at all levels. In working to advance, to truly grasp the Guide, seize the opportunity, finding a position and play to our strengths and take the initiative, ensure that the start of the new year tree, new performance. Grasp the Guide, is to dock in policy measures to seize the initiative. Accurate grasp of the Central Government, provinces and cities to speed up the development of new policies and new initiatives with a high degree of policy acumen to capture opportunities to accelerate development. Follow-up to promote the transformation and upgrading of the five great ideas offer a great chance. Five large development philosophy is the Party Central Committee with a view to promote economic transformation and upgrading, complete the building of a well-off society in major
decisions and arrangements, is the development of a profound change. County-wide at all levels should conscientiously study and implement, implement the five ideas, green development, open development, on which to share advantages, and actively explore new path of innovative and coordinated development, changing the concept of leading the transformation of development mode of development, promote the development of quality improvement. Floor supply side structural reform implementation provides an effective strategy for improving the quality of development. Supply de structural reform is future full deepening reform of plays, to according to o policy to stability, and industry policy to associate, and micro policy to live, and reform policy to real, and social policy to backingn grasp Central, and provinces release out of new signal, combined County love actual accurate docking, full grasp capacity, and to inventory, and to lever, and drop cost,
and fill short Boardementation, prompted County economic transformation upgrade, and continued upgrade. Poverty

冀教版六年级上册《比例尺》教学设计

设计理念：根据新课程标准，本课的设计理念是：
1、创设生动具体的教学情境，使学生在愉悦的情境中学习数学知识。
2、鼓励学生独立思考、自主探索和合作交流。
3、尊重学生的个体差异，满足多样化的学习 需求。鼓励学生用不同的
方法解决问题，提倡算法多样化，使每个学生都能找到适合自己的方法。 教材分析:《比例尺》是冀教版小学数学第十一册第四单元的内容，它是在学生
学习了比的意义和基 本性质以及比例的意义和基本性质的基础上进行教学的，主
要教学比例尺的意义及其应用。这部分内容有 较强的实际应用价值，它可为学生
架起一道数学学习和现实生活之间的桥梁，使他们充分感受到数学的现 实意义，
从而进一步激发学习兴趣，并为后续学习打下良好的基础。
学情分析：这节课是学生 在学习了化简比的基础上学习的。学生对比例尺有点生
疏，而且这部分知识也较难理解所以学起来较枯燥 。在整堂课中教师为学生提供
了广阔的独立空间，让学生从不同的角度认识问题，这就是每个学生有了独 立发
展的空间，有培养了学生搜集问题和解决问题的能力。
教学内容：冀教版《数学》六年级上册第
50~53
页

教学目标

1
、使学生在动手动脑中了解比例尺的含义，能按自己确定的比 例尺画示意
图。

2
、在设计名片、画镜框示意图等活动中，经历认识比例尺的过程

3
、积极参加数学活动，认识有些问题可以借助比例尺解决

教学重点、难 点：使学生在动手动脑中经历知识形成的过程，初步理解比例尺的
含义，并能准确、熟练的应用好比例尺 这个词语进行相关描述。

教学准备：画图纸、刻度尺、铅笔、橡皮、米尺

教学过程

these precious and worth cherishing. Second, scientific research situation, grasp the opportunities and challenges of transformation and upgrading of full completion of the n-Fives crucial. Focused grand blueprint, must to history of thinking views trend, put associate times forward of pulse, stepped on associate economic law of drums, find associate transformation upgrade of path, in grasp macro trend in the advance science development; to strategy of vision conspiracy to global, always tight buckle national macro policy oriented, accurate grasp County love actual, based overall caught opportunities, and PCT thought, ensure County economic social development always along right track continued forward; to precision of measures seeking breakthrough, tightly pegged focus task and bottleneck restricted, Science and identify practical and effective measures, advance breakthrough, ensuring all tasks carry out to the letter; based on scientific assessment and
strict implementation, persist in combining routine supervision and centralized supervision, accurate assessment Township departments, strictly cash rewards, prompted the departments own implementation at all levels. In working to advance, to truly grasp the Guide, seize the opportunity, finding a position and play to our strengths and take the initiative, ensure that the start of the new year tree, new performance. Grasp the Guide, is to dock in policy measures to seize the initiative. Accurate grasp of the Central Government, provinces and cities to speed up the development of new policies and new initiatives with a high degree of policy acumen to capture opportunities to accelerate development. Follow-up to promote the transformation and upgrading of the five great ideas offer a great chance. Five large development philosophy is the Party Central Committee with a view to promote economic transformation and upgrading, complete the building of a well-off society in major
decisions and arrangements, is the development of a profound change. County-wide at all levels should conscientiously study and implement, implement the five ideas, green development, open development, on which to share advantages, and actively explore new path of innovative and coordinated development, changing the concept of leading the transformation of development mode of development, promote the development of quality improvement. Floor supply side structural reform implementation provides an effective strategy for improving the quality of development. Supply de structural reform is future full deepening reform of plays, to according to o policy to stability, and industry policy to associate, and micro policy to live, and reform policy to real, and social policy to backingn grasp Central, and provinces release out of new signal, combined County love actual accurate docking, full grasp capacity, and to inventory, and to lever, and drop cost,
and fill short Boardementation, prompted County economic transformation upgrade, and continued upgrade. Poverty
一、创境导入，明确比例尺的用途

师：课前我 们拍了两张照片，你们想不想看一看
?(
想
!)(
出示照片课件
)< br>这是
我们全班的照片。看一看它发生了怎样的变化
?(
缩小
)
再仔细观察这张照片，又
发生了怎样的变化
?(
扩大
)
在缩小与扩大 的变化中，这张照片是从整体发生变化
还是从局部发生了变化呢
?
在整体变化中
,
照片缩小和扩大的倍数相同吗
?
说得好
极了
!
这张照片 在整体上都发生了缩小或扩大相同倍数的的变化。

在现实生活当中，有时根据需要把实际物 体缩小或扩大若干倍以后画到图纸
上。你能举出生活中这样的例子吗
?
你知道这是把实 际物体扩大还是缩小了
?(
课
件出示：中国地图、某个学校平面图
)
这是把实际物体缩小若干倍画到图纸上的。
(
课件出示：手表图
)
像手表这样 很小的机器零件，我们为了研究的方便，常常把
它扩大若干倍以后再画到图纸上。

二、探究新知

（一）布置活动内容。

师：下面请同学们根据 我们刚才的发现
,
把实际物体同时缩小或扩大相同倍
数的想法付诸实践
,当一回小小设计师
,
你们愿意吗
?
谁来读一读这次活动的要求
呢
?(
课件出示活动要求
)

小小设计师

活动要求：

大头蛙为了发展业务，决定印制一盒名片，印制的要求是名片长
4
厘米，宽
3
厘米。

(1)
、
4
人一小组
,
组长做好分工安排


(2)
、学生拿出作图工具在练习本上开始设计

让学生将自己设计好的作品在组内在组内进行展示和交流。

请部分同学将自己的设计展示在黑板上。

请好奇心强的学生拿刻度尺检验黑板上的名片。

these precious and worth cherishing. Second, scientific research situation, grasp the opportunities and challenges of transformation and upgrading of full completion of the n-Fives crucial. Focused grand blueprint, must to history of thinking views trend, put associate times forward of pulse, stepped on associate economic law of drums, find associate transformation upgrade of path, in grasp macro trend in the advance science development; to strategy of vision conspiracy to global, always tight buckle national macro policy oriented, accurate grasp County love actual, based overall caught opportunities, and PCT thought, ensure County economic social development always along right track continued forward; to precision of measures seeking breakthrough, tightly pegged focus task and bottleneck restricted, Science and identify practical and effective measures, advance breakthrough, ensuring all tasks carry out to the letter; based on scientific assessment and
strict implementation, persist in combining routine supervision and centralized supervision, accurate assessment Township departments, strictly cash rewards, prompted the departments own implementation at all levels. In working to advance, to truly grasp the Guide, seize the opportunity, finding a position and play to our strengths and take the initiative, ensure that the start of the new year tree, new performance. Grasp the Guide, is to dock in policy measures to seize the initiative. Accurate grasp of the Central Government, provinces and cities to speed up the development of new policies and new initiatives with a high degree of policy acumen to capture opportunities to accelerate development. Follow-up to promote the transformation and upgrading of the five great ideas offer a great chance. Five large development philosophy is the Party Central Committee with a view to promote economic transformation and upgrading, complete the building of a well-off society in major
decisions and arrangements, is the development of a profound change. County-wide at all levels should conscientiously study and implement, implement the five ideas, green development, open development, on which to share advantages, and actively explore new path of innovative and coordinated development, changing the concept of leading the transformation of development mode of development, promote the development of quality improvement. Floor supply side structural reform implementation provides an effective strategy for improving the quality of development. Supply de structural reform is future full deepening reform of plays, to according to o policy to stability, and industry policy to associate, and micro policy to live, and reform policy to real, and social policy to backingn grasp Central, and provinces release out of new signal, combined County love actual accurate dockng, full grasp capacity, and to inventory, and to lever, and drop cost,
and fill short Boardementation, prompted County economic transformation upgrade, and continued upgrade. Poverty
课件出示结论：像这样画出的尺寸与要求的尺寸一样，我们就说这样 的图是
按
1
：
1
画的。

学生尝试描述。

（二）初步认识比例尺

课件出示第
2
例题的要求：画一个长
60
厘米，宽
45
厘米的镜框示意图

1
、请你按照自己的想法在本上画，并标上长和宽。

学生试画，教师巡视指导，了解学生画图的情况。

2
、交流

谁愿意说说你是怎么画的。展示一下学生的作品，说一说把长和宽缩小到原
来的几分之几？画出 的示意图的长和宽各是多少？


师：同学们很善于动脑筋，画出了这些示意图，我们 就来看第一幅图。把长
和宽分别缩小到原来的
110
。

请学生议一议：把长和宽分别缩小到原来的十分之一表示什么意思？

现在小组内讨论交流，然后将本组的想法向全班汇报。

生自由回答。

课件出示结论：十分之一是指所画示意图是按
1
：
10
画的，也就是 这幅图
的比例尺是
1
：
10
。

请学生想一想： 比例尺
1
：
10
中，比的前项
1
代表什么？比的后项
10
又代
表什么？（前项代表图上距离，后项代表实际距离）

提问：还有同学是按别的比例尺画的吗？

请学生汇报一下。

师：
(
指着第一幅图
)
我们说这幅图的比例尺是
1
：
10
，在画完图后，要把比
例尺标在图下。在标的过程中一定要注意，要先写
1，再写表示的长度。

these precious and worth cherishing. Second, scientific research situation, grasp the opportunities and challenges of transformation and upgrading of full completion of the n-Fives crucial. Focused grand blueprint, must to history of thinking views trend, put associate times forward of pulse, stepped on associate economic law of drums, find associate transformation upgrade of path, in grasp macro trend in the advance science development; to strategy of vision conspiracy to global, always tight buckle national macro policy oriented, accurate grasp County love actual, based overall caught opportunities, and PCT thought, ensure County economic social development always along right track continued forward; to precision of measures seeking breakthrough, tightly pegged focus task and bottleneck restricted, Science and identify practical and effective measures, advance breakthrough, ensuring all tasks carry out to the letter; based on scientific assessment and
strict implementation, persist in combining routine supervision and centralized supervision, accurate assessment Township departments, strictly cash rewards, prompted the departments own implementation at all levels. In working to advance, to truly grasp the Guide, seize the opportunity, finding a position and play to our strengths and take the initiative, ensure that the start of the new year tree, new performance. Grasp the Guide, is to dock in policy measures to seize the initiative. Accurate grasp of the Central Government, provinces and cities to speed up the development of new policies and new initiatives with a high degree of policy acumen to capture opportunities to accelerate development. Follow-up to promote the transformation and upgrading of the five great ideas offer a great chance. Five large development philosophy is the Party Central Committee with a view to promote economic transformation and upgrading, complete the building of a well-off society in major
decisions and arrangements, is the development of a profound change. County-wide at all levels should conscientiously study and implement, implement the five ideas, green development, open development, on which to share advantages, and actively explore new path of innovative and coordinated development, changing the concept of leading the transformation of development mode of development, promote the development of quality improvement. Floor supply side structural reform implementation provides an effective strategy for improving the quality of development. Supply de structural reform is future full deepening reform of plays, to according to o policy to stability, and industry policy to associate, and micro policy to live, and reform policy to real, and social policy to backingn grasp Central, and provinces release out of new signal, combined County love actual accurate docking, full grasp capacity, and to inventory, and to lever, and drop cost,
and fill short Boardementation, prompted County economic transformation upgrade, and continued upgrade. Poverty
教师示范在图下标出比例尺
1
：
10
。

5
、交流其他几幅图的比例尺是多少？（
1
：
5
，
1
：
3
，
1
：
15
）

6
、让学生在自己画图的示意图上标出比例尺。

师：好。现在请同学们在自己画的图上标出比例尺，同桌互相检查一下。

学生标出比例尺，互相检查。

7
、还可以按怎样的比例尺来画？如果按< br>1
：
1
的比例尺来画会是什么样
?
说
明什么？还有个 比例尺，如果按
2
：
1
来画会是什么样？

比较一下，这 三组比例尺有什么不同，
2
：
8
、
1
这样的比例尺叫放大比 例尺；
1
：
5
，
1
：
3
，
1：
15
，这样的比例尺叫缩小比例尺。无论是放大比例尺，还是缩
小比例尺，但它 们有一个共同的特点，都是前项代表图上距离，后项代表实际距
离；都表示图上距离和实际距离的比。< br>
9
、同样的镜框为什么所画的示意图的大小不一样？（比例尺不同）在三个
比例尺中哪个更合适？

10
、小结：在确定比例尺时要根据物体的实际大小和图纸 的大小来确定（不
要过大或过小）选择恰当的比例尺。

11
、你在哪里见 过比例尺？（学生说）比例尺是不是一把尺子？它有单位
吗？为什么？

师：比例尺其实就是一个比。

三、实践应用

我们通过画镜框示意图认识了比例尺，下面就运用今天所学知识解决一些实
际问题。

1
、练一练第
1
题

（
1
）请同桌合作 ，选择课桌面，凳子面，画出它们的示意图，并填写活动
报告。请同学们打开课本第
53
页，看一看“活动报告”中要填哪些内容。

学生看书。

these precious and worth cherishing. Second, scientific research situation, grasp the opportunities and challenges of transformation and upgrading of full completion of the n-Fives crucial. Focused grand blueprint, must to history of thinking views trend, put associate times forward of pulse, stepped on associate economic law of drums, find associate transformation upgrade of path, in grasp macro trend in the advance science development; to strategy of vision conspiracy to global, always tight buckle national macro policy oriented, accurate grasp County love actual, based overall caught opportunities, and PCT thought, ensure County economic social development always along right track continued forward; to precision of measures seeking breakthrough, tightly pegged focus task and bottleneck restricted, Science and identify practical and effective measures, advance breakthrough, ensuring all tasks carry out to the letter; based on scientific assessment and
strict implementation, persist in combining routine supervision and centralized supervision, accurate assessment Township departments, strictly cash rewards, prompted the departments own implementation at all levels. In working to advance, to truly grasp the Guide, seize the opportunity, finding a position and play to our strengths and take the initiative, ensure that the start of the new year tree, new performance. Grasp the Guide, is to dock in policy measures to seize the initiative. Accurate grasp of the Central Government, provinces and cities to speed up the development of new policies and new initiatives with a high degree of policy acumen to capture opportunities to accelerate development. Follow-up to promote the transformation and upgrading of the five great ideas offer a great chance. Five large development philosophy is the Party Central Committee with a view to promote economic transformation and upgrading, complete the building of a well-off society in major
decisions and arrangements, is the development of a profound change. County-wide at all levels should conscientiously study and implement, implement the five ideas, green development, open development, on which to share advantages, and actively explore new path of innovative and coordinated development, changing the concept of leading the transformation of development mode of development, promote the development of quality improvement. Floor supply side structural reform implementation provides an effective strategy for improving the quality of development. Supply de structural reform is future full deepening reform of plays, to according to o policy to stability, and industry policy to associate, and micro policy to live, and reform policy to real, and social policy to backingn grasp Central, and provinces release out of new signal, combined County love actual accurate dockng, full grasp capacity, and to inventory, and to lever, and drop cost,
and fill short Boardementation, prompted County economic transformation upgrade, and continued upgrade. Poverty
学生试画，教师巡视，个别指导，然后全班交流、展示。

（
2
）交流学生画示意图的过程，画出的示意图和活动报告。要给学生充分
展 示不同示意图的机会。

师：谁愿意把你们画的示意图和活动报告展示一下。

给学生充分展示示意图和活动报告的机会，教师及时给与适当的点评。

四、小结

通过今天的学习，你有哪些收获？