外研版（2019）必修第三册Unit 3 The world of Science Developing ideas课件(共25张PPT)

(共25张PPT)
Unit 3 The world of science
崇尚科学
Future
II.Fankin’s experiment:
How much is ture
富来克林的实验:
有多少是真的？
What else do you know about him
Benjamin Franklin
Lead-in
Benjamin Franklin (1706-1790) was one of the Founding Fathers of the United States and helped draft the Declaration of Independence and the US Constitution. 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.
Read the passage and find out what Franklin's experiment aimed to prove.
Franklin's experiment aimed to prove that lightning was a form of electricity.
P42 2
Before-reading
Aim
Materials
Result
Procedures
Read and Fill

Experiment Report
To know if lightning was really produced by electricity or something else.
a kite, a string, a key
Lightning was a form of electricity.
Fast-reading
a. A flash of lightning hit the kite.
b. Franklin raised the kite.
c. Electricity was conducted through the string.
d. Franklin got an electric shock.
e. Franklin touched the key
Rearrange the procedures.
a
b
c
d
e
Careful-reading
1.What is the text mainly about A. The story of Franklin's experiment is true or not.B. The aim of Franklin's experiment.C. The procedure of Franklin's experiment.D. The effect of Franklin's experiment.2.What does the author think have more inspired people A. The story of scientists' experiments.B.The result of scientists' experiments.C. The scientists' spirit of scientific exploration.D. The fact of scientific exploration.
3. What is the effect of the experiment
A. It has introduced generations of children to science.
B. It proved that lightning is a form of electricity.
C. It is important to establish the truth.
D. All of the above.
4. Why do scientists question acceptedideas
A.To find what took place.
B. To prove what is true.
C.To establish the facts.
D. To inspire people to do scientific exploration.
Careful-reading
1.What is the text mainly about A. The story of Franklin's experiment is true or not.B. The aim of Franklin's experiment.C. The procedure of Franklin's experiment.D. The effect of Franklin's experiment.2.What does the author think have more inspired people A. The story of scientists' experiments.B.The result of scientists' experiments.C. The scientists' spirit of scientific exploration.D. The fact of scientific exploration.
A
C
3. What is the effect of the experiment
A. It has introduced generations of children to science.
B. It proved that lightning is a form of electricity.
C. It is important to establish the truth.
D. All of the above.
4. Why do scientists question acceptedideas
A.To find what took place.
B. To prove what is true.
C.To establish the facts.
D. To inspire people to do scientific exploration.
D
C
Para.1
Para.2
Para.3
Para.4
Para.5
Para.6
Read the passage and match the main ideas with the paragraphs.
A. The effect of the experiment.
B. The introduction to Franklin's famous experiment.
C. Conclusion
D. Doubt about Franklin’s experiment.
E. How the experiment is carried out.
F. Doubt about other accepted ideas.
Main idea
Franklin's spirit of scientific exploration is still
considered an inspiration.
People are amazed at and inspired by Franklin's experiment.
Scientists question what really happened in Franklin's experiment.
Number the statements to show how people's attitudes towards Franklin's experiment have changed.
2
1
3
P44 3
Post-reading
Do you think it matters that Franklin's experiment might not be true Why
Think and share
→No. Although it might not be
true, we are still inspired by his
spirit of scientific exploration.
→ Yes. In science, facts should be more important than fiction.
1
1. raised the kite
Read and Visualize
2. was conducted to the key
4. got an electric shock
3. touched the key
1. raised the kite
1
2
3
4
Read and Visualize
lightning flash:
300 million Volts
household current:
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
However, neither the story nor the details of the experiment are entirely true, Although it has been proved that Franklin’s experiment took place, more than one scientist has questioned what really happened. The details about the string and the key is true. But scientists all agree that if Franklin had actually touched the key, he would certainly have died from the electric shock.
What if Franklin had touched the key
Read and Imagine
Retell the passage with the help of graphic organizer.
Franklin's experiment:
How much is true
what
people's attitude
procedures
aim
conclusion
materials
amazed & inspired
doubtful; but still inspired
Critical thinking
Pay much attention to the pronunciation发音.
Listenning
You need to hold a pen and read silently while listening.
1. fly a _____　 放风筝
2. tie ... ___ ... 将......系在......上
3. along _____ 与......一起
4. take ______ 发生
5. die _____ 死于
6. come up _____ 提出，想出
7. as _____ as 和......一样
8.be generous _____ sth. 在某方面大方
9. be generous ___ sb. 对某人大方
10. _______ hesitate 毫不犹豫地
kite
to
with
place
from
with
well
with
to
without
Key phrases
Practice
attach...to, in order to, neither...nor,
come up with, give an account of
选词填空
1. He ___________________ how the students earned that money and donated it to the foundation.
2. In order to cure your disease, you can ________ drink _____ smoke.
3.An online survey was recently conducted ___________ obtain insights from the public.
4. To identify the registrations, you can even ______ an image ___ each account.
5.The Chinese scientist _________________ a new idea for increasing sales.
gave an account of
neither
nor
in order to
attach
to
came up with
1. Read and recite the key phrases.
2. Read the article fluently.
3. Complete the corresponding A and B in word book.
Homework
Class is over!
See you next time!