(共33张PPT)
Unit 2 Can you tell me more about her
北京版六年级下册
Lesson 8
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.能理解本课故事内容，能够通过听读故事，获取相关信息。
3.能够在教师引导下尝试复述故事。
（二）思维能力目标
1. 能根据文本内容阅读，理解故事内容。
2.能够通过听读故事，获取相关信息。
Teaching objectives
（三）学习能力目标
1. 通过Role-play 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，读懂故事内容，获取相关信息。
（四）文化品格目标
能通过阅读，了解并说出不同肤色的形成原因；能更加平等地对待不同肤色的人。
Lead in
Think and discuss
Why do they have different skin colours
Let’s learn
Why do people have different skin colours
Let’s have a look.
Let’s learn
Listen and say
Why Are People of Different Colours
All skin colours come from melanin (黑色素).Our body makes melanin to protect our skin from the sun. People with more melanin are darker and those with less are lighter.
People in hot areas developed(生长)more melanin because dark skin helped protect against the sun and skin cancer. In colder countries, people developed lighter skin because they did not face the same kind of pressure to protect themselves from the sun. If your parents came from sunny places you were born with more melanin and darker skin. If your parents came from less sunny places, you were born with less melanin and lighter skin.
Put a bandage around your finger on a sunny day. Take it off a few days later. Did that part of your finger make any melanin No! The bandage blocked the sun from the skin. When sunlight hits your skin, melanin comes to protect it, and gives you a tan.
Let’s learn
If your parents came from sunny places, you were born with more melanin and darker skin.
如果你的父母来自阳光充足的地区,你生来就会有较多的黑色素，皮肤颜色会比较深。
此句是if引导的用来描述在某条件下,某事很可能发生的句型。If 在该句中意为“如果”。came是 come 的过去式形式，came from 意为“来自”。
e.g. If you run, you'll get there in time.
If the rain didn't stop in ten minutes, he decided to leave.
Let’s learn.
Let’s do
Read and answer
All skin colours come from melanin (黑色素).Our body makes melanin to protect our skin from the sun. People with more melanin are darker and those with less are lighter.
Where do all skin colours come from
All skin colours come from melanin. Our body
makes melanin to protect our skin from the sun. People with more melanin are darker and those
with less are lighter.
Let’s do
Read and answer
People in hot areas developed(生长)more melanin because dark skin helped protect against the sun and skin cancer. In colder countries, people developed lighter skin because they did not face the same kind of pressure to protect themselves from the sun. If your parents came from sunny places you were born with more melanin and darker skin. If your parents came from less sunny places, you were born with less melanin and lighter skin.
Where do people develop more melanin
People in hot areas.
Let’s do
Read and answer
People in hot areas developed(生长)more melanin because dark skin helped protect against the sun and skin cancer. In colder countries, people developed lighter skin because they did not face the same kind of pressure to protect themselves from the sun. If your parents came from sunny places you were born with more melanin and darker skin. If your parents came from less sunny places, you were born with less melanin and lighter skin.
What function does black skin have
Dark skin helps protect against the sun and skin cancer.
Let’s do
Read and answer
People in hot areas developed(生长)more melanin because dark skin helped protect against the sun and skin cancer. In colder countries, people developed lighter skin because they did not face the same kind of pressure to protect themselves from the sun. If your parents came from sunny places you were born with more melanin and darker skin. If your parents came from less sunny places, you were born with less melanin and lighter skin.
Why do people from colder countries develop lighter skin
Because they don’t face the same kind of pressure to protect themselves from the sun.
Let’s do
Read and answer
Put a bandage around your finger on a sunny day. Take it off a few days later. Did that part of your finger make any melanin No! The bandage blocked the sun from the skin. When sunlight hits your skin, melanin comes to protect it, and gives you a tan.
Why does the finger have different colours
The bandage blocked the sun from the skin.
Let’s do
Read and judge
1. 1. Darker-skinned people have more melanin than lighter skinned people.
2. Dark skin can help protect against the sun and skin cancer.
3. If you were born in a hot and sunny place, you would have darker skin.
4. Our body can produce melanin without sunlight.
√
√
×
√
Let’s do
Think and choose
What will your finger look like after you remove the bandage several days later
Let’s do
Think and match
Let’s do
Answer the following questions.
1. Why do the Chinese people have darker skin than most people in Northern Europe
2. Why do the Chinese people have lighter skin than many people in Africa
Northern Europe is colder than China. People in colder countries develop lighter skin.
Africa is hotter than China. People in hotter countries develop dark skin.
Let’s do
Try to retell the passage
melanin, sun, darker, lighter
hot areas, colder countries, sunny places, less sunny places
bandage, finger, a sunny day, a few days later, blocked, tan
Let’s do
Think and share
How to prevent tanning
Let’s do
Think and share
Wear a hat and a pair of sunglass.
Let’s do
Think and share
Wear thick clothing.
Let’s do
Think and share
Use sunscreen.
Let’s do
Think and share
Use a sun umbrella.
Let’s do
Who is lying
I live in Nigeria(尼日利亚).
It’s hot here.
Let’s do
Who is lying
I live in India(印度).
It’s hot here.
Let’s do
Who is lying
I live in Korea(韩国).
It’s neither too hot nor too cold.
Let’s do
Who is lying
I live in Norway(挪威).
It’s always hot here.
Let’s do
Who is lying
Let’s do
Group work
Work in groups. Discuss what you’ve learnt from the passage “Why Are People of Different Colours ” And then share it 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 8
If your parents came from sunny places, you were born with more melanin and darker skin.
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 what you’ve learnt from this passage.
谢谢
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