Unit 3 The world of Science Developing ideas 课件（共17张PPT，内镶嵌视频）外研版（2019）必修第三册

(共17张PPT)
The world of science
Franklin’s Experiment:
How Much Is True
B3U3
He was one of the Founding Fathers of the USA.
He helped draft the Declaration of Independence.
He was a printer and publisher, successful diplomat, creative scientist and inventor.
He is on the $100 Bill.
He flew a kite during a storm to prove electricity of lightning.
Benjamin Franklin
Lead-in Activity 1: Guess and explore
Pre-reading Activity 2: Read and predict
隐含的
明显的
1.Text type of the passage:
_________
2.Question to be answered:
__________________
Pre-reading Activity 2: Read and predict
Read “Learning to learn” and try to predict. (1 min.)
essay
How much of Franklin’s experiment is true
Fast reading Activity 3: Read for structure
Franklin’s Experiment:
How Much Is True
Read the whole passage and divide it into 3 parts. (5 mins.)
Conclusion
Introduction
Body
Para. ( )
Para. ( )
Para. ( )
Franklin’s
________
People’s _______
towards the story
We should not always believe everything we read or hear.
Para. ( )
Para. ( )
1
2-5
6
experiment
2
attitudes
3-5
Careful reading Activity 4: Read for details
Read para.1 and underline the topic sentence.
Reading Skill ①
We can read the introduction part to get the main idea.
Reading Skill ②
We can get the author’s attitude by identifying constructive conjunctions (转折连接词）like however, but, although.
Careful reading Activity 4: Read for details
Watch a video and find out the details of Franklin’s experiment.
Materials
a kite
a string
a key
Result
He got an electric shock.
Conclusion
Lightning is a form of electricity.
2._____ a metal key to a string
4._____ the key with the finger
3._____ the kite during the rainstorm
Attach
Raise
Touch
1._____ a string to a kite
Tie
What makes this experiment not scientific
Humans can’t touch lightning.
Franklin touched the key.
Franklin couldn’t have touched the key.
＋
=
What the text says
What we know
An inference

lightning flash: 300 million Volts
household: 120 Volts
What are people’s attitudes towards the experiment
Number the statements to show how their attitudes have changed.
(2 mins.)
( ) 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.
3
1
2
Careful reading Activity 4: Read for details
Careful reading Activity 4: Read for details
( 1 ) People are amazed at and inspired by Franklin’s experiment.
( 2 ) Scientists question what really happened in
Franklin’s experiment.
Careful reading Activity 4: Read for details
According to the scientists’ statements, what is true/fake in Franklin’s experiment
Materials
a kite
a string
a key
2._____ a metal key to a string
4._____ the key with the finger
3._____ the kite during the rainstorm
1._____ a string to a kite
Result
He got an electric shock.
Conclusion
Lightning was a form of electricity.
How much is true
Tie
Attach
Raise
Touch
Not 100% true
Do you think it matters that Franklin’s experiment might not be true Why
Careful reading Activity 5: Think and share
Read para.6 and share your ideas with partner. (2 mins.)
What qualities should we have
Post-reading Activity 6: Brainstorm and debate
Mini Debate
You are at a consultative conference (协商会议) to discuss the topic:
Should we continue to teach school children Franklin’s experiment
Work in group of 4-5
Show your standpoints and reasons according to your identity.
You can argue with each other.
G1 G2
FOR（支持） FOR（支持）
Teacher/ Parents Scientist/
Student
G3 G4
AGAINST（反对） AGAINST（反对）
Teacher/ Parents Scientist/
Student
If you want your children to be intelligent, read them fairy tales. If you want them to be more intelligent, read them more fairy tales.
---Albert Einstein
Experience is truer guide than the words of others.
---Leonardo Da Vinci