(共27张PPT)
Time is money
the American Founding Father
be attached to
a flash of lighting
get an electric shock
has been amazed by
scientific experiments
scientific discoveries and inventions
neither..nor..
die from
establish the facts
come up with
theory of gravity
hit him on the head
spirit of scientific exploration
美国开国元勋
附属于 爱慕
闪电
受到电击
惊叹于
科学实验
科学发现和科学发明
既不...也不...
死于
确定事实
想出
引力定律
打到他的头
科学探索精神
a flash of lighting
establish the facts
死于
惊叹于
scientific experiments
附属于
spirit of scientific exploration
既不...
也不...
Pre-reading
Franklin(1706-1790)was one of the Founding Fathers of the United States and helped draft the Declaration of Independence. Apart from being a successful statesman, he was also well known as a leading American author, printer and publisher, successful diplomat, creative scientist and inventor.
美国的开国元勋之一
政治家
作家
印刷商
出版商
发明家
外交官
科学家
起草《独立宣言>
What do you know about him
Unit 3 The world of science
Developing ideas
Read and Find
To encourage readers to question
this experiment
Reading Tip: You can grasp the main idea from the title, first paragraph and last paragraph.
Reading Tip: We recognize the purpose by reading the title, first paragraph and last paragraph.
Aim
Materials
Result
Procedures
Read and Fill
Experiment Report
To prove if lightening was really produced by electricity or something else.
A kite with a string and a metal key
Lightning was a form of electricity.
1
Read and Visualize
A flash of lightning hit the kite,
and Electricity was conducted to the key
Franklin raised the kite
Franklin got an electric shock
Franklin touched the key
2
3
4
He raised the kite with a piece of string tied to it. A metal key was attached to the string. A flash of lightning hit the kite, and electricity was conducted through the string to the key. Franklin then touched the key with his finger and got an electric shock.
Read and Retell
1
Read and Retell
2
3
4
Read and Answer
What inspiration can we get from Franklin’s experiment
For many years, schools have taught the story of Franklin’s lightning experiment. More than one generation of school children has been amazed by his bravery and his scientific approach to looking for the truth. Franklin, along with many scientists, has inspired us and taught us that scientific experiments are important in order to establish the truth and to contribute towards later scientific discoveries and inventions.
Read and Fill
What inspiration can we get from Franklin’s experiment
For many years, schools have taught the story of Franklin’s lightning experiment. More than one generation of school children has been amazed by his bravery and his scientific approach to looking for the truth. Franklin, along with many scientists, has inspired us and taught us that scientific experiments are important in order to establish the truth and to contribute towards later scientific discoveries and inventions.
We are inspired by his _________________ and his ______________________________________.
He also taught us __________________________________
bravery
scientific approach to looking for the truth
the importance of scientific experiments
…
Watch and Discuss
patriotic(爱国的)， persistent ( 坚持不懈的 ), and often question accepted idea.
As a great scientist, he or she should have more than one good quality, such as being...
devoted
cautious
objective
industrious
innovative
selfless
ambitious
knowledgeable
cooperative
lightning flash:
300 million Volts
(伏特)
household current
(America):
120 Volts
Life Tip：
Humans can’t withstand lightning.
Franklin touched the key.
Franklin couldn’t have touched the key.
＋
=
What makes this experiment not scientific
What the text says
What we know
An inference
Reading Tip: Make an inference to discover untold information.
Read and Infer
touched the key
got an electric shock
was conducted through the string
raised the kite
hit the kite
How much is true
touched the key
Not 100% true
Why is questioning so important to scientists
Scientists often question accepted ideas because they want to establish the facts. Some have even questioned the story about the apple that fell on Newton’s head and led him to come up with his theory of gravity. In fact, more than one account suggests that while Newton was certainly inspired by a falling apple, there is no proof that it hit them on the head.
Read and Answer
Why is questioning so important to scientists
Scientists often question accepted ideas because they want to establish the facts. Some have even questioned the story about the apple that fell on Newton’s head and led him to come up with his theory of gravity. In fact, more than one account suggests that while Newton was certainly inspired by a falling apple, there is no proof that it hit them on the head.
accepted ideas
question
facts
Scientists question accepted ideas to ________________________________.
establish facts.
Read and Answer
Read and conclude
Your school has held a science festival, where Franklin’s experiment was performanced, Please make a speech to
question the experiment.
Writing Project
Not 100% true
Ladies and gentlement，
Good morning
I am a student who ______ ____________the science festival. Undoubtedly, it is _______________. Students like me are amazed and inspired by those scientists’ ____________. However, I must figure out that there is something that needs to be reconsidered .
I think the lightning experiment of Franklin is__________. According to the experiment presented in the festival, _____________________. We all know that science should _____________. As a student, I should question ___________.
That’s all, thank you .
Reference for you
Ladies and gentlemen，
Good morning
I am a student who has recently participated in the science festival. Undoubtedly, it is wonderful and educative. Students like me are amazed and inspired by those scientists’ bravery and brilliance. However, I must point out that there is something that needs to be reconsidered.
I think the lightning experiment of Franklin is not 100 percent true. According to the experiment presented in the festival, Franklin touched the key by himself to prove that lightning is a form of electricity. However, the voltage of lightning is about 300 million, which is definitely far beyond the highest voltage a human can bear. We all know that science should respect facts and look for truth. As a student, I should question the accetped ideas.
That’s all, thank you .
Question is the key
to any science.
An investment in knowledge pays the best interest.
well done is better than well said.
Homework
Newton’s discovery of gravity:
How much is true
Find the story of Newton’s discovery and write an essay to question it
Thank You !
板书
How
Much
Is
Ture
Para.1 Theme fiction vs fact
Para.2-3 Detail purpose
materials
procedures
result
inspirations
Para.4-5 viewpoints of scientists Not 100% true
para. 6 Conclusion question
