灯光与影子PPT教学课件
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sheng male roles with brightly painted faces dan female roles jing clown roles chou male roles
1. When did Beijing Opera start? It dates back to the late 18th century.
skills needed
Beijing Opera
costume
singing
Qionghua Cantonese Opera Festival
1. Read the passage about Cantonese Opera carefully and find out information according to the diagram.
Besides Beijing Opera, there are still other National Treasures in China. They serve as a window of China. And through this window, foreigners are able to understand Chinese culture better.
晚上两根木棒的影子如图（短木棒的影子是玻璃反 光形成的），请确定图中路灯灯泡所在的位置.
在直角坐标平面内，
一点光源位于A（0，5） y 处，线段CD垂直于X轴，
D为垂足，C(3，1)，则 A
CD在X轴上的长 ，
C
点C的影子E的坐标
为
。
O DE
x
中心投影 中心投影的特点 中心投影与平行投影的区别 中心投影的应用
下课了! 结束寄语
• 视图与投影来自现实生活,它是反映 空间观念的重要数学模型.
• 想一想、试一试、做一做是我们学 好数学的重要手段.
新课标北师大版课件系列
《高中英语》
必修2
the National Treasure
Beijing Opera
Beijing Opera dates back to the 18th century.
知识应用（想一想）
下面两幅图分别是两棵小树在同一时刻的影 子.你能判断出哪幅图是灯光下形成的，哪幅 图是太阳光下形成的吗？
两条光线是平行，因此 两光线相交于一点，因 它们是太阳光下形成的. 此它们是灯光下形成的.
知识应用（想一想）
⒈如果两棵小树的影子方向相同，能判断它们是平行 投影吗？与同伴进行交流．
riding a horse
holding a tassel in his hand
an army of thousands
four generals and four soldiers
上课了!
5.2灯光与影子
探究新知（做一做）
取一些长短不等的小棒及三角形、矩形纸片， 用手电筒去照射这些小棒和纸片.
⑴ 固定手电筒，改变小棒或纸片的摆放 位置和方向，它们的影子分别发生了什么变化？
⑵ 固定小棒和纸片，改变手电筒的摆放 位置和方向，它们的影子发生了什么变化？
结论1：手电筒与物体，改变其中的 一个位置和方向，影子都会发生改 变.
再过另一根木杆的顶端及其影子的顶端作一条直 线，两线相交于点O.
点O就是路灯灯泡所在的位置.
知识应用
请画出图中小姐妹在路灯下的影
子．
关键：发光点、物体上的点及其影子上的对应点 在一 条直线上．
知识应用
A
1.一天晚饭后，姐姐小 丽带着弟弟小刚出去 散步，经过一盏路灯 时，小刚突然高兴地 对姐姐说：“我踩到 你的‘脑袋’了”。 你能确定小刚此时所 站的位置吗？
Cantonese Opera
costume
singing
Besides Beijing Opera, there are still other National Treasures in China. They serve as a window of China. And through this window, foreigners are able to understand Chinese culture better.
a mixture of two or more things
the clothes worn in plays or films
to have a history of
a group of valuable things,very special or important for the country
⒉如果两棵小树的影子方向相反，能判断它们是中心 投影吗？与同伴进行交流．
⒊如果两棵小树的影子方向相同，且树高与影长不成 比例，能判断它们是中心投影吗？与同伴进行交流．
知识应用（想一想）
同一时刻，两根木棒的影子如图，请画出图中 另一根木棒的影子．与同伴进行交流．
P
C
A
M
E BF D
N
Q
探索创新 某公司的外墙壁贴的是反光玻璃，
结论2：点光源,物体上的点,以及它影子上的 对应点，三点都在同一条直线上.
探照灯、手电筒、路灯和台灯的 光线可以看成是从一点出发的，
像这样的光线所形成的投影称为 中心投影.
探究知识
例 确定图中路灯灯泡所在的位置.
o
关键： 过物
体上的点 以及它们 影子上的 对应点的 直线都过 光源.
解：过一根木杆的顶端及其影子的顶端作一条直线；
2. Discuss with your group members to find out the similarities and differences between Beijing Opera and Cantonese Opera.
history
main roles
skills needed
2. What skills do Beijing Opera actors need to have? It is a combination of acting, talking, singing,
music, dancing and acrobatics. 3. How many main roles are there in Beijing Opera?
movement of one’s body using the skills of an acrobat
a very high and loud voice
Task 1:
Listen to an interview about Beijing Opera and answer the following questions.
It was performed mostly on open-air stages in markets, streets, teahouses or temple courtyards.
2. Why does it have very loud music and a piercing singing style?
sheng
dan
jing
chou
history
main roles skills needed
Beijing Opera
Task 2:
Listen and use the Strategies to answer the questions.
1. Where was Beijing Opera performed at the beginning?
There are four.
4. Match the main roles with their names. sheng male roles dan female roles jing male roles with brightly painted faces chou clown roles
B
F
2. 如果此时小刚的影
子与姐姐小丽的影子
一样长，你能在图中
C
DE
画出表示小刚身高的
线段吗？
知识应用
如图是两棵小树在同一时刻的影子.请在图中画出形成树 影的光线.它们是太阳的光线还是灯光的光线？
作法：
①过大树的顶端 及其影子的顶端 作一条直线；
由作法知两光线相交于一 点，因此它们是灯光的光线.
②再过小树的顶 端及其影子的顶 端作一条直Baidu Nhomakorabea， 两线相交于一点.
history
main roles
skills needed
Beijing Opera
costume
singing
Various body movements can represent actions
riding in a carriage
walking with a flag on each side
1. When did Beijing Opera start? 2. What skills do Beijing Opera actors need to have? 3. How many main roles are there in Beijing Opera? 4. Match the main roles with their names.
It is a combination of acting, talking, singing, music, dancing and acrobatics.
The costumes are always in bright colour.
costume
date back combination a national treasure a piercing voice acrobatics costume
2. Why does it have very loud music and a piercing singing style?
3. Why do performers wear brightly coloured costumes?
1. Where was Beijing Opera performed at the beginning?
In order to be heard over the crowds.
3. Why do performers wear brightly coloured costumes?
In order to be seen by the crowds clearly.
history
main roles
1. When did Beijing Opera start? It dates back to the late 18th century.
skills needed
Beijing Opera
costume
singing
Qionghua Cantonese Opera Festival
1. Read the passage about Cantonese Opera carefully and find out information according to the diagram.
Besides Beijing Opera, there are still other National Treasures in China. They serve as a window of China. And through this window, foreigners are able to understand Chinese culture better.
晚上两根木棒的影子如图（短木棒的影子是玻璃反 光形成的），请确定图中路灯灯泡所在的位置.
在直角坐标平面内，
一点光源位于A（0，5） y 处，线段CD垂直于X轴，
D为垂足，C(3，1)，则 A
CD在X轴上的长 ，
C
点C的影子E的坐标
为
。
O DE
x
中心投影 中心投影的特点 中心投影与平行投影的区别 中心投影的应用
下课了! 结束寄语
• 视图与投影来自现实生活,它是反映 空间观念的重要数学模型.
• 想一想、试一试、做一做是我们学 好数学的重要手段.
新课标北师大版课件系列
《高中英语》
必修2
the National Treasure
Beijing Opera
Beijing Opera dates back to the 18th century.
知识应用（想一想）
下面两幅图分别是两棵小树在同一时刻的影 子.你能判断出哪幅图是灯光下形成的，哪幅 图是太阳光下形成的吗？
两条光线是平行，因此 两光线相交于一点，因 它们是太阳光下形成的. 此它们是灯光下形成的.
知识应用（想一想）
⒈如果两棵小树的影子方向相同，能判断它们是平行 投影吗？与同伴进行交流．
riding a horse
holding a tassel in his hand
an army of thousands
four generals and four soldiers
上课了!
5.2灯光与影子
探究新知（做一做）
取一些长短不等的小棒及三角形、矩形纸片， 用手电筒去照射这些小棒和纸片.
⑴ 固定手电筒，改变小棒或纸片的摆放 位置和方向，它们的影子分别发生了什么变化？
⑵ 固定小棒和纸片，改变手电筒的摆放 位置和方向，它们的影子发生了什么变化？
结论1：手电筒与物体，改变其中的 一个位置和方向，影子都会发生改 变.
再过另一根木杆的顶端及其影子的顶端作一条直 线，两线相交于点O.
点O就是路灯灯泡所在的位置.
知识应用
请画出图中小姐妹在路灯下的影
子．
关键：发光点、物体上的点及其影子上的对应点 在一 条直线上．
知识应用
A
1.一天晚饭后，姐姐小 丽带着弟弟小刚出去 散步，经过一盏路灯 时，小刚突然高兴地 对姐姐说：“我踩到 你的‘脑袋’了”。 你能确定小刚此时所 站的位置吗？
Cantonese Opera
costume
singing
Besides Beijing Opera, there are still other National Treasures in China. They serve as a window of China. And through this window, foreigners are able to understand Chinese culture better.
a mixture of two or more things
the clothes worn in plays or films
to have a history of
a group of valuable things,very special or important for the country
⒉如果两棵小树的影子方向相反，能判断它们是中心 投影吗？与同伴进行交流．
⒊如果两棵小树的影子方向相同，且树高与影长不成 比例，能判断它们是中心投影吗？与同伴进行交流．
知识应用（想一想）
同一时刻，两根木棒的影子如图，请画出图中 另一根木棒的影子．与同伴进行交流．
P
C
A
M
E BF D
N
Q
探索创新 某公司的外墙壁贴的是反光玻璃，
结论2：点光源,物体上的点,以及它影子上的 对应点，三点都在同一条直线上.
探照灯、手电筒、路灯和台灯的 光线可以看成是从一点出发的，
像这样的光线所形成的投影称为 中心投影.
探究知识
例 确定图中路灯灯泡所在的位置.
o
关键： 过物
体上的点 以及它们 影子上的 对应点的 直线都过 光源.
解：过一根木杆的顶端及其影子的顶端作一条直线；
2. Discuss with your group members to find out the similarities and differences between Beijing Opera and Cantonese Opera.
history
main roles
skills needed
2. What skills do Beijing Opera actors need to have? It is a combination of acting, talking, singing,
music, dancing and acrobatics. 3. How many main roles are there in Beijing Opera?
movement of one’s body using the skills of an acrobat
a very high and loud voice
Task 1:
Listen to an interview about Beijing Opera and answer the following questions.
It was performed mostly on open-air stages in markets, streets, teahouses or temple courtyards.
2. Why does it have very loud music and a piercing singing style?
sheng
dan
jing
chou
history
main roles skills needed
Beijing Opera
Task 2:
Listen and use the Strategies to answer the questions.
1. Where was Beijing Opera performed at the beginning?
There are four.
4. Match the main roles with their names. sheng male roles dan female roles jing male roles with brightly painted faces chou clown roles
B
F
2. 如果此时小刚的影
子与姐姐小丽的影子
一样长，你能在图中
C
DE
画出表示小刚身高的
线段吗？
知识应用
如图是两棵小树在同一时刻的影子.请在图中画出形成树 影的光线.它们是太阳的光线还是灯光的光线？
作法：
①过大树的顶端 及其影子的顶端 作一条直线；
由作法知两光线相交于一 点，因此它们是灯光的光线.
②再过小树的顶 端及其影子的顶 端作一条直Baidu Nhomakorabea， 两线相交于一点.
history
main roles
skills needed
Beijing Opera
costume
singing
Various body movements can represent actions
riding in a carriage
walking with a flag on each side
1. When did Beijing Opera start? 2. What skills do Beijing Opera actors need to have? 3. How many main roles are there in Beijing Opera? 4. Match the main roles with their names.
It is a combination of acting, talking, singing, music, dancing and acrobatics.
The costumes are always in bright colour.
costume
date back combination a national treasure a piercing voice acrobatics costume
2. Why does it have very loud music and a piercing singing style?
3. Why do performers wear brightly coloured costumes?
1. Where was Beijing Opera performed at the beginning?
In order to be heard over the crowds.
3. Why do performers wear brightly coloured costumes?
In order to be seen by the crowds clearly.
history
main roles