Unit 5 Into the wild Understanding Ideas 课件(共20张PPT，内镶嵌音频)-外研版（2019）必修第一册

(共17张PPT)
Unit 5 Understanding Ideas
The Monarch’s Journey
Page /Match the main ideas with each part.A.Howdo people solve the trouble Para.1Fast readingB.Whatis migration C.Whatis monarch’s serious trouble D.Howdoes the monarch migrate Para.3Para.2Para.4Para.5E.When &wheredid the monarch migrate 4 minActivity 1The Monarch's Journey
when/ where
how
trouble
solution
What /why
Para.1
Para.2
Para.3
Para.4
Para.5
Activity 2
Read Paragraph 1
Tips 2： Focus on key words（聚焦关键词）:
Be aware of significant words or phrases in the text. This will give you an idea of the main point and help you get essential information.
1. What is migration
Many animals move from one place to another at certain times of the year. This annual movement is called migration.
2. Why do the animals migrate
to find food
to seek partner
in search of warmer weather
What & why
Activity 2
Read paragraph 2
Tips 3： Visualize (形成思维图像)
Create mental images of the settings , characters , and events in the text .
Monarch butterfly's migration Time
Distance
Direction
Destination
every autumn
4000 kilometers
south
California or Mexico
When & where
Activity 2
Read paragraph 3
a. The monarch butterfly is able to tell___________________.
b. Using these two pieces of information, the monarch butterfly determines _____________.
c. The monarch butterfly measures ____________________ with its eyes.
d. The monarch butterfly reaches _________________________________
the time of day
the way to go
the places where it will spend
the winter.
the position of the sun
d
a
c
b
c
a
b
d
How
Activity 2
Read paragraph 4
e. Humans _________ trees.
f. The _______________________________ where monarchs can be found is destroyed.
g. Humans use chemicals that ____________ that monarch caterpillars eat.
h. The monarch butterfly’s population ___________________________________
in the last few years.
cut down
natural environment of many places
kill the plants
has crashed (by as much as 90 per cent)
e
hh
e
g
h
f
f
g
Monarch butterfly’s
trouble
&
causes
Trouble
Causes
Cut down trees
Use chemicals
Human activities
Its population has crashed by 90%.
Trouble
Activity 2
Read paragraph 4
Think deeply: other factors that destroy the monarch’s habitat.
factors
forest fire
overpopulation
food shortage
desforestation
high quantity of
exchaust gases
urbanization
1. overpopulation：
/ v p pju le n/
(n)人口过剩
2. deforestation:
/ di f r ste n/
(n)采伐森林
3. urbanization:
/ b na ze n/
(n)都市化
Activity 2
Read paragraph 5
1. What measures have people taken to protect the monarch
Record monarch’ s migration.
Raise greater awareness.
Make sure enough plants to feed on.
2. Why do we make the research Is it useful
survival
我们对这种美丽生物了解越多，它存活的机会就越大， 它们在自然界中得以长久生存并保持其位置的可能性就越大。
Solution
The Monarch's Journey
when/ where
how
trouble
solution
What /why
autumn; the south of America;
to seek for food、partners、
warmer weather
Many animals move from one place to another at certain times of the year
Para.1
Para.2
Para.3
Para.4
Para.5
1.tell the time of the day;
2.measure the position of the sun;
3.determine the way to go;
The population has crashed by 90%
1.raise greater awareness;
2.record monarch’ s migration.
3.make sure enough plants to feed on.
Activity 3
Think & share
Why does the author use “journey” instead of “migration” in the title
1. The monarch’s journey to the destination.
2. Scientists’ journey to discover the mystery.
3. Human’s journey to protect the environment.
It is a long and difficult process
We should make our joint (共同的)efforts in the journey to protect the ecosystem.
“All beings flourish when they live in harmony and receive nourishment from Nature.”
Conclusion
“If we humanity do not fail Nature, Nature will not fail us.”
Xi’s Words
Summary
Activity 4
Lucid waters and lush mountains are invaluable assets.
1.flourish::繁荣 2. nourishment:营养 4.lucid:清澈的 5.lush:草木繁茂的 6.asset:财富
（v) / fl r / (n) / n r m nt/ (adj) / lu s d/ （adj) /l / (n) / set/
Activity 5
Homework
Create a poster
to
protect wild animals
Summary
Items For Reflection 3(Excellent) 2(Good) 1(Need to improve)
●acquire the basic information about the monarch butterfly's migration
●analyze the causes and effects of the monarch butterfly's migration;
●work individually and cooperatively to describe your own idea;
● arouse awareness of protecting the ecosystem
Do you achieve your goals Tick(√) it