Unit 5 Revealing nature Developing ideas 课件（共26张，内嵌动图）-外研版（2019）选择性必修第一册

(共26张PPT)
学校标志
Unit 5 Revealing nature
Developing ideas
The Secret Language of Plants
Unit 5 Revealing nature
Developing ideas — reading
【版本：外研　册别：选择性必修一】
Learning objectives:
By the end of class, we are able to:
know the type of the passage;
learn how plants communicate;
understand some detailed information;
develop a positive attitude of treasuring nature and living in harmony with nature.
CONTENTS
01
02
03
04
While-reading
05
Post-reading
Summary and Evaluation
Lead-in
Pre-reading
06
Homework
Enjoy the video and the plants.
Lead-in:
Have you seen the film Avatar
What plants in Avatar are you interested in
Do you believe that plants have the ability to communicate
Lead-in: free talk
Pre-reading
游戏闯关
Read the title and the picture of the passage, predict what it is about.
It is about how plants communicate with each other.
Pre-reading: prediction
Let’s know more
about plants
Pre-reading
While-reading
游戏闯关
What’s the type of the passage
A . narration (记叙文）
B . argumentation （议论文）
C . news report
D. exposition （说明文）
The
Secret Language
of Plants
While-reading:fast reading
Activity
1
An exposition is a way of explaining or clarifying the subject.Its functions as an evaluation or investigation.
Scan the passage, put the paragraphs into three parts, find out the main idea of each part.
Plants can communicate in ways humans can’t notice.
Maybe humans will be able to “talk” with plants one day.
(Para.1~2)
(Para.3)
(Para.4)
(Para.5)
(Para.6)
Chemicals
Sound
wood wide web
give examples
While-reading:fast reading
2
Activity
Part 1
Part 2
Part 3
What’s the passage mainly about
The
Secret Language
of Plants
While-reading:fast reading
A. Plants also have secrets.
B. Plants can talk with animals and people.
C. Plants need protecting urgently.急切地
D. Plants can communicate in their own way.
Activity
3
The
Secret Language
of Plants
While-reading:fast reading
Activity
4
Match the main idea with each part.
① Part 1 (Paras.1~2) _________________________
② Part 2 (Paras.3~5) _________________________
③ Part 3 （Para.6) __________________________
A. Different ways of communication plants using
B. Scientists' new research about talking plants.
C. Maybe one day we will know enough about plant communication to be able to "talk" with plants.
While-reading: careful reading
1.What do trees often do in stories in many cultures （Para.1)
A.Give warnings.
B.Tell jokes.
C.Dance.
D.Sing.
The
Secret Language
of Plants
Activity
5
Read the passage again and choose the best answer.
While-reading:careful reading
2.How does a bean plant act first when attacked by insects (Para.3)
A.To run away.
B.To release chemicals.
C.Dance.
D.Sing.
The
Secret Language
of Plants
3.What is the writer’s attitude towards the scientific research on the secret language of plants (Para.6)
A . Positive
B . Negative
C . Neutral
D. Indifferent
The
Secret Language
of Plants
While-reading:careful reading
Pre-reading
While-reading
Post-reading
游戏闯关
Work in groups. Give a talk about communication between living things.
What ways can you think of
Post-reading:group work
Ants communicate with each other through touch, chemical signals，moving their bodies and even using their legs to make sounds.
Bees "dance" to signal to other bees that they have found food.
Post-reading:
Think &Share
What do you think are the benefits of studying plant communication
help us know more about the world of plants
get a better understanding of the secret of nature
help us that human should live in harmony with nature（与自然和谐相处）
……
Summary:
fill in the blanks.
Scientists are learning the secret ways in which plants “talk” to each other. It has been known for some time that plants use chemicals 1______________ (communicate) with each other. When 2________ (attack) by insects, the plant releases chemicals from the leaves that 3______________ (eat). This is like 4___ warning. When another plant detects the chemicals, it starts to release 5___ (it) own, different chemicals. Some chemicals drive insects away.
6____________ (surprising), plants also use sound to communicate. Some plants make noises with their roots. Some trees make clicking noises when there is not enough water, 7__________ (indicate) drought is arriving.
Most surprisingly of all, plants have an 8________ (amaze) system of communication that can link nearly every plant in a forest. It is called “ wood wide web”, 9______ is in some ways similar to the Internet we use. Using the wood wide web, plants can share information and even food 10_____ each other.
Surprisingly
indicating
amazing
which
with
to communicate
attacked
are being eaten
a
its
Self- evaluation (自我评价）
Questions: Option:(A=2分 B=1分 C=0分) Total points:
1.Have you known the type of the passage A. a lot B. a little C. none
2.Can you get the main idea of this passage A.a lot B. a little C. none
3.Can you know ways of communicating between plants A.a lot B. a little C. none
4.Have you learnt some useful words and expressions A.a lot B. a little C. none

2
Pre-reading
While-reading
Post-reading
Winner
游戏闯关
Homework
完成学考指南P18
C篇关于植物交流的阅读
学校标志
Thanks for listening !