北师大版（2019）选择性必修 第三册Unit 9 Human Biology Lesson 2 Brain Power课件(共17张PPT)

(共17张PPT)
Lesson 2 Brain power
Unit 9 Human Biology
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How much do you know about the brain
Different areas of the brain are responsible for different functions.
额叶
顶叶
颞叶
枕叶
小脑
协调
Match the words from the box with their definitions.
atom nerve billion cell organ
( ) 1. one thousand million
( ) 2. a part of the body that has a particular purpose,
e.g. the heart
( ) 3. the smallest piece of something that can exist alone
( ) 4. a tiny part of the body that helps carry messages
to and from the brain
( ) 5. a unit of living matter
billion
organ
atom
nerve
cell
Before listening to a lecture about the brain, read the statements and write T (true) or F (false).
( ) 1. The brain consists of only white matter.
( ) 2. The brain weighs just over a kilo.
( ) 3. The brain contains about one billion cells.
( ) 4. The brain uses 10% of the body’s energy.
( ) 5. The brain sends messages in the same way as a
computer works.
( ) 6. There are more possible connections in your brain
than there are atoms in the universe.
F
T
F
F
T
T
Listen to the lecture and check your answers to Activity and correct the false ones.
1. The brain consists of only white matter.
2. The brain weighs just over a kilo.
3. The brain contains about one billion cells.
4. The brain uses 10% of the body’s energy.
5. The brain sends messages in the same way as a computer
works.
6. There are more possible connections in your brain than
there are atoms in the universe.
grey and white matter.
over one hundred billion cells.
20%
F
F
F
Listen again. Complete the information you hear about the brain. Then tell your partner what you have learnt about the brain.
What matter does it consist of Grey and white matter
How much does it weigh
How much body’s energy does it use
How many cells does it contain
just over a kilo
20%
over one hundred billion cells
How are messages sent The brain cells make up _________________, which are connected by _________________. The brain sends messages using _________________.
nerve cells
electrical impulses
electrical impulses
What have we learnt about the brain in the last ten years There are different areas in the brain, which are _______________________________. We now know which parts of the brain _____________ different parts of our ________________ from them. The brain also has different areas for different kinds of __________. You have one area for your ______________ and another area for ___________________________________________________.
responsible for different functions
are related to
body and feelings
thinking
first language
a foreign language that you learn when you are older
Complete the summary with the words from the lecture.
The brain consists of 1. _____________________ matter. It weighs 2. _____________________. It uses 3. _____________________ of the body’s energy. It contains over 4. _____________________ which make up nerve cells. These nerve cells are connected by electrical impulses. There are more possible connections in one brain than there are 5. _____________________.
grey and white
just over a kilo
20%
one hundred billion cells
atoms in the universe
Scientists have mapped different areas of the brain that are responsible for 6. ________________. There are also different areas for different types of thinking, such as learning your own language and learning a 7. ________________ language.
different functions
foreign
You will listen to a call-in radio programme with five persons. One person is the presenter, and one person is a guest professor. The other three people will ask the professor questions. Listen to the programme and complete the table.
What problem do they have What can they do
Anna:_________________________________________________ ___________________________ ___________________________
________________________________________________________
Memory isn’t as good as it used to be, so do brain exercises really work
challenge their brain with learning new things they are not good at
What problem do they have What can they do
John: ______________________ ____________________________ ____________________________ _________ on junk food, ____________________ of Omega- 3fats
Bella: ______________________ ____________________________ ____________________________ ____________________________
____________________________
____________________________
Exams is coming up, so he wonders if there are certain foods that are good for the brain.
Is there any particular kind of exercise that can improve the health of her brain
cut down
increase the intake
do exercise that is good for the heart, such as walking and running
Asking for advice
1 _________________ try them
2 _________________, Professor Kim
3 So what kind of activities _________________
4 Is there any particular kind of exercise… _________________
Giving Advice
1 _________________________ try learning a new language…
2 _________________________ is to cut down on junk food.
3 _________________________ increase your intake of …
4 _________________________ do exercise that is good for your heart.
Listen and plete the Talk Builder.
Should I
What’s your advice
You could
One thing you can do
It might also be a good idea to
What should I do
I advise you to
do you suggest
Talk Builder
Asking for and Giving Advice
Work in groups for more ways to increase brain power. Then give a short presentation to the class.
Speaking
Eat healthy foods. They contain vitamins and minerals that
are important for the nervous system.
Get a lot of playtime (exercise).
Wear a helmet when you ride your bike or play other sports
that require head protection.
Don't drink alcohol, take drugs, or use tobacco.
Use your brain by doing challenging activities, such as
puzzles, reading, playing music, making art, or anything else
that gives the brain a workout!
So what can we do for the brain
Recall what you have learned in the class and write a short passage about how to increase brain power.