(共25张PPT)
Unit 4 What’s the weather like
北京版六年级下册
Lesson 16
Teaching objectives
（一）语言知识目标
1. 能借助图片和文字，听懂、朗读课文。
2. 能够了解彩虹是如何形成的。
3. 能够在教师引导下尝试复述课文内容。
（二）思维能力目标
1. 能根据文本内容阅读，理解课文内容。
2. 能够通过听读课文，获取相关信息。
Teaching objectives
（三）学习能力目标
1. 通过Group work等活动，学会与他人合作学习的能力。
2. 通过不同的学习任务，读懂课文内容，获取相关信息。
（四）文化品格目标
能够通过教师讲解以及多模态资源的学习，激发亲身尝试制造彩虹的兴趣。
Lead in
Watch and sing
Lead in
Think and share
Rainbows come after the rain.
It has 7 different colours.
What else do you know about rainbows
Let’s learn
Listen and say
Let’s learn
Rainbows are made of sunlight and water.
彩虹是由阳光和水汽形成的。
Light is made up from the colours of the rainbow.
阳光由彩虹的各种颜色组成。
be made of 和be made (up)from 都表示“某物由……制成”。
Let’s learn.
Let’s learn
【辨析】be made of 和be made(up) from:
be made of用来表示可以从某物外观上判断出原材料,其变化过程为物理过程;
be made (up)from 指从某物外观上不能判断出原材料，其变化过程为化学过程。
e.g.
The desk is made of wood.
Paper is made from wood.
Let’s learn.
Let’s do
Read and answer
What are rainbows made of
Rainbows are made of sunlight and water.
Rainbows are made of sunlight and water. Before and after it rains, there is a lot of water in the air. When sunlight touches the drop of water, the light scatters (散开) and we see all the colours of the rainbow.
Let’s do
Read and answer
Why do we see all the colours of the rainbows
When sunlight touches the drop of water, the light scatters (散开) and we see all the colours of the rainbow.
Rainbows are made of sunlight and water. Before and after it rains, there is a lot of water in the air. When sunlight touches the drop of water, the light scatters (散开) and we see all the colours of the rainbow.
Let’s do
Read and answer
Why do we see different colours
We see sunlight as white, so when light bounces, it comes back to us the same colour—white.
Light from the sun colours our world. Light can bounce (反射)scatter ( 散 开), or be absorbed (被吸收). Light is made up from the colours of the rainbow. We see sunlight as white, so when light bounces, it comes back to us the same colour—white. When light is absorbed, it goes away and we see darkness. We see many different colours when light is scattered.
Let’s do
Read and answer
What happens when light is scattered（散开）
We see many
different colours when light is scattered.
Light from the sun colours our world. Light can bounce (反射)scatter ( 散 开), or be absorbed (被吸收). Light is made up from the colours of the rainbow. We see sunlight as white, so when light bounces, it comes back to us the same colour—white. When light is absorbed, it goes away and we see darkness. We see many different colours when light is scattered.
Let’s do
Read and answer
What are the colours of sunlight
The colours of sunlight are: red, orange, yellow, green, blue, indigo, and violet.
The colours of sunlight are: red, orange, yellow, green, blue, indigo, and violet.
We can make a rainbow with water and sunlight.
Let’s do
Read and judge
1. Rainbows are made of sunlight and rain.
2. Light can bounce ,scatter, or be absorbed.
3. Light is made up from the colours of the rainbow.
4. We see many different colours when light is absorbed.
5. We can make a rainbow with water and sunlight.
×
√
×
√
√
Let’s do
Read and number.
1. the water glass method
3
2
1
Let’s do
Read and number.
2. the mirror method
1
3
2
Let’s do
Read and number.
3. the CD method
2
1
3
Let’s do
Answer the following questions.
1. What do you need in the mirror method
Answer: ___________________________________.
2. What do you need in the CD method
Answer: ___________________________________.
3. What are the colours of the rainbow
Answer: ___________________________________.
A mirror, a full glass of water, white walls, a flashlight
A CD, a table
Red, orange, yellow, green, blue, indigo, and violet
Let’s do
Try to retell the passage
rainbows, sunlight, water, scatters, colours
bounce, scatter, be absorbed, be made up from,
the colours of sunlight, indigo, violet
make a rainbow, sunlight, water
Let’s do
Group work
Work in groups. What else method do you know to make a rainbow Discuss it with your group members and then do it by yourselves. Share your idea and result with the whole class.
Summary
1. We can master the meaning of the passage.
2. We can master the structure of the passage.
3. We can retell the passage.
Blackboard design
Lesson 16
Rainbows are made of sunlight and water.
Light is made up from the colours of the rainbow.
Homework
1. Read the story and get the main idea of each paragraph.
2. Try to retell the passage.
3. Write a short passage about the methods of making rainbows.
谢谢
21世纪教育网（www.21cnjy.com)
中小学教育资源网站
兼职招聘：
https://www.21cnjy.com/recruitment/home/admin
