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Unit 5 The power of plants
—— Understanding ideas: Within a plant ——
授课人：XXXX 时间：2025年12月
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root
stem
leaf
What are these parts of the plant ?
What do plants need to grow?
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Today we will go into a plant. Let's see how "workers" work within the plant.
Where is it?
It is within a plant.
Who are in the plant?
Workers in green uniforms
What are the workers doing?
Look at the tittle and picture.
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Lead in
Let's read the passage and find out what they are producing.
They are working/producing something.
workshop
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Fast reading (2 mins):
Match the main idea with each paragraph.
What workers produce
How workers work in the Leaf
The introduction of the Worker No.55
The importance of plants
Workers will take a rest.
The introduction of Worker No. 55
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Careful reading (30 secs)
Read Para.1 and answer.
I’m Worker No.55
What is Worker No. 55 going to do?
He's going to start work in the plant.
Is he a real worker in the plant?
No, he isn't.
Why does the writer use "worker" in the passage?
A. Because the writer wants to tell us the time of the work.
B. Because it makes the passage about a plant more interesting and easier to understand.
C. Because the Leaf is a real workshop with many workers.
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How workers work in the Leaf
Careful reading (90 secs)
Read Para.2, answer and complete.
Where does he work?
He works in Workshop 1001 in the Leaf.
How do the workers work?
The workers in the Leaf collect ________ and _______ during the day.
Now workers from the Root send up _______.
The water will rise up to the Leaf through the ______.
Then workers in the Leaf will mix ________, ______
and __________.
sunlight
CO?
water
Stem
CO?
water
sunlight
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How workers work in the Leaf
Look and match.
1.________
2.____________
3._______
CO? (carbon dioxide)
sunlight
water
What are they going to produce?
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What workers produce
Careful reading (90 secs)
Read Para.3 and complete.
sunlight
sugar
oxygen
carbon dioxide
water
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What workers produce
Careful reading
Read Para.3 and complete.
oxygen
sugar
It's ______ for the growth of the plant.
useful
It means a lot to ___________ and _________, though – they need it to ________!
animals
humans
breathe
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Accoding to para.2＆3 and these pictures:
CO? (carbon dioxide)
oxygen
sunlight
carbon dioxide
water
sugar
oxygen
光合作用
Photosynthesis
/?f??t???s?nθ?s?s/
What is the process(过程) about?
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光合作用 (Photosynthesis)
植物的绿叶里分布着大量叶绿体，叶绿体是光合作用发生的场所，内部含有叶绿素和酶，能利用二氧化碳和光能进行光合作用，合成糖类等有机物质，并释放氧气。
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Workers will take a rest.
Careful reading (1 min) ：Read Para.4＆5 and answer.
The importance of plants.
1. When will the workers take a rest?
In the dark.
2. Why are plants important to the natural world?
Because they give more than food and oxygen. Without plants, the natural world would be very differernt.
Because there isn’t sunlight during the night, so the workers stop working.
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Choose another suitable(合适的) title.
A. How to make sugar.
B. How plants work.
C. Why plants are great.
D. Going to the green workshop.
P82
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P82

What does “plant” mean in the title?
A. The living thing, like a tree or a flower.
B. The place where"workers" work in to make food for the plant and oxygen for us, just like a factory.
C. Both A and B
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Further thinking: What can plants do in the world?
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Further thinking: What can plants do in the world?
For animals: __________________________
For human: __________________________
For environment(环境): _________________
_________________
provide food and homes
provide food
clean the air
make oxygen
Plants are our friends.
We should protect them.
Work in groups to think and share: What do you know about plants?
{5C22544A-7EE6-4342-B048-85BDC9FD1C3A}Plants need ...
Plants can...
air
soil
space
water
sunlight
carbon dioxide
...
make oxygen
provide food
clean the air
give homes to animals
...
Useful expressions:
1. The plants need ... to grow. It can collect ... and produce...
2. It is important to ... /It is useful for ...
3. Without plants, we ...
4. It means a lot to ...
5. We should try our best to ...
Homework
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You must:
You can:
1. Read the passage until you can read fluently.
2. Remember the words and expressions we learnt this lesson.
3. Describe the process of photosynthesis in English.
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