《Let's Do an Experiment》Look into Science! PPT下载
第一部分内容：Think About It!
Do you like to do experiments?
What experiments have done?
What experiment is Brian going to do?
What’s Danny's theory about what will happen?
New Words
experiment jar upside
pour correct scientific
method raincoat force
pressure conclude
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Let's Do an ExperimentPPT，第二部分内容：Read the lesson and answer the questions.
①Where does Danny think they should do the experiment?
②What keeps the water in the jar?
③Is Jenny sure of her theory?How do you know?
④Why does Danny put on his raincoat?
⑤What does Danny conclude?
Read the experiment.Put the sentences in the correct order.
Put a piece of cardboard over the jar.
The jar of water is upside down,but the water stays in the jar.
This is because air pressure pushes the cardboard onto the jar.
Fill the glass jar with water.
Turn the glass jar over quickly.Hold your hand on the cardboard for a few seconds.
Remove your hand from underneath the jar.What happens?
There is more air outside the jar than inside,so there is more air pressure outside than inside.
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Let's Do an ExperimentPPT，第三部分内容：Main phrases:
·turn…upside down
·pour out
·scientific method
·take…off
Main sentences:
·I think the floor will get wet.
·We should do this experiment outside,Brian.
·That’s called the scientific method.
·I am so sure of my theory that Brian can do the experiment over your head and I know you won’t get wet.
·He puts on a raincoat and sits down.
·How is that possible?
·It is strong enough to hold the water.
·So what have we discovered?
·What do you conclude,Danny?
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Let's Do an ExperimentPPT，第四部分内容：教材解读
1.Then I turn the jar upside down and take my hand off the cardboard.
◆turn…upside down意为“把……翻转/倒过来”,相当于turn over。upside down意为“正面朝下”。right side up意为“正面朝上”。
◆take…off…在本句中意为“使……离开/脱离……”或“把……从……拿开”。
【拓展】take off意为“摘掉,(飞机)起飞,脱掉”。
2.I think the floor will get wet.
◆I think…意为“我认为……”,其后可接that引导的宾语从句。在使用时,应遵循“否主反从”的规律,即否定主句,反问从句。
◆get wet意为“变湿”。get在本句中为系动词,意为“变得……”,后接形容词作表语。
3.We should do this experiment outside,Brian.
experiment为可数名词,意为“实验”。do experiments/do an experiment意为“做实验”。
【拓展】experiment作动词,意为“做实验,进行试验”。
4.You think the water will pour out,Danny.
pour out意为“倒出,使流出,涌出”。pour在本句中表示“涌流”。
【拓展】pour…into…意为“把……倒进……”。
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Let's Do an ExperimentPPT，第五部分内容：Listen and sing a song.
What is science?
What is science?
Can you explain?
Please make it easy for my brain.
It’s about making observations.
Why do onions make me cry?
Why do clouds go by?
What keeps the birds in the sky?
That’s just science.
It’s about matter—the universe.
Why does a car stay on the road?
Why is there green all over a toad?
Why can’t I carry a heavy load?
That’s just science.
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Let's Do an ExperimentPPT，第六部分内容：Practice
Ⅰ.用适当的介词填空
1.The box is covered_______a piece of red paper.
2.A strange thing happened_______him last week.
3.TV is another way_______saying television.
4.Dave,please fill the jar_______water at first.
5.Have you read_______the earthquake in the newspaper?
Ⅱ.单项填空
1.Let’s do_______experiment.
A.an B.a C.the D./
2.The streets were_______cheering people.
A.full with B.filled of
C.filled with D.fulled of
3.The cardboard can_______the water in the jar.
A.close B.keep C.held D.kept
4.—What made you_______?
—The novel written by Lao She.
A.cry B.to cry C.crying D.cried
5.Let’s_______a party tonight!
A.has B.have C.having D.had
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Let's Do an ExperimentPPT，第七部分内容：Homework
1.Finish off the exercises in the activity book.
2.Preview Lesson 26.
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