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(共14张PPT)
选择性必修二Unit 1 Science and Scientists
Using Language
Talk about scientific experiences
Learning objectives：
By the end of the class, you will be able to:
1.extract specific information and retrieve the missing information while listening;
2.practice listening for details using a natural conversation in English;
3.describe the scientific research or experimental activities that interest students and stimulate their interest in science.
行业PPT模板http:///hangye/
Step 1: Lead-in
Have you ever been to a science museum
What can you do in a science museum
Solve tricky scientific problems
Experimenting
行业PPT模板http:///hangye/
Use some keywords to describe these pictures
Predict what happened in these pictures
Step 2: Listen and predict
行业PPT模板http:///hangye/
Check your guess
A giant dish
A giant Piano keyboard
A Blue screen
A hall of mirrors
A white light;
shadows
Step 2: Listen and predict
Experimenting
行业PPT模板http:///hangye/
Listen to the conversation, then write down the letters(A-E) for the photos in order that you hear them described.
Step 3: Listen and sort
1.
2.
3.
4.
5.
A. A giant dish
B. A giant Piano keyboard
C. A Blue screen
D. A hall of mirrors
E. A white light; shadows
Step 4: Listen and complete
I especially liked an area of the museum called Light Games. It was really cool. They had a ______________ where I could see myself __________ thousands of times!
hall of mirrors
reflected
Well, they had an experiment where we looked at a blue screen for a while, and then suddenly we could see _______________ moving around on it. They were our own __________. When we look at a blue screen, we can see our own blood cells moving around like little lights!
tiny bright lights
blood cells
I stood in front of a _________, and it cast different shadows of me, in every _________ of the rainbow!
white light
colour
Step 4: Listen and complete
They had a giant _____________ that you could use your feet to play. But then, instead of playing the sounds of a piano, it played the voices of ______________!
piano keyboard
Then they had a giant dish, and when you spoke into it, it __________ the sound back and ____________. You could use it to speak in a ________ to someone 17 metres away. It all sounds so cool. I wish I could have _________ with you.
classical singers
made it louder
whisper
gone
reflected
Step 5: Listen and conclude
What aspects can a scientific phenomenon be described from
1.I especially liked an area of the museum called Light Games, it was really cool. They had a hall of mirrors where I could see myself reflected thousands of times!
2.They had an experiment where we looked at a blue screen for a while, and then suddenly we could see tiny bright lights moving around on it. You'll never guess what those bright lights were! They were our own blood cells, For some reason, our eyes play tricks on us when we look at a blue screen, and we can see our own blood cells moving around like little lights!
3. I stood in front of a white light, and it cast different shadows of me in every colour of the rainbow!
4. They had a giant piano keyboard that you could use your feet to play. But then, instead of playing the sounds of a piano, it played the voices of classic singers!
5.Then they had a giant dish, and when you spoke into it, it reflected the sound back and made it louder, You could use it to speak in a whisper to someone 17 metres away.
4.reason
1.name
3.process
2.material
Step 6: Experience and describe
Today, I want to talk about an interesting phenomenon and I learn about it from the “...Experiment” [Name]
You can make it easily by using..., just like I have here. [Materials]
Firstly...Secondly...Then... [Process]
The reason to this phenomenon is... [Reasons]
This phenomenon can be applied to... [Significance]
Useful Structures
How can we describe a scientific phenomenon
Listening
Step 6: Experience and describe
Recording
Reorganize
Share
Requirements:
1.Catch the keywords of the experiment
2.Use sentence structures we learned
Choose one of the experiments to describe
Step 6: Experience and describe
Watch a video and try to describe a scientific phenomenon
Listening
Step 6: Experience and describe
Recording
Reorganize
Share
Requirements:
1.Catch the keywords of the experiment
2.Use sentence structures we learned
实验一：漂浮的图案 (Floating Drawing)
Whiteboard marker 白板笔
Mirror 镜子
Tray 托盘
Release agent 剥离剂 （解释墨水中能降低附着力的关键物质）
Adhesion 附着力 （解释图案通常能粘在镜子上的原因）
Non-permanent ink 非永久性墨水 （概括性解释其特性）
实验二：彩虹牛奶动画 (Rainbow Milk Art)
Food coloring 食用色素
Dishwashing liquid / Dish soap 洗洁精
Surface tension 表面张力 （实验的核心原理）
Surfactant 表面活性剂 （洗洁精中的关键成分）
Fat molecules 脂肪分子 （解释牛奶为何能与洗洁精发生反应）
Words you may use:
Choose one of the experiment to describe
Share Time!

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