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(共21张PPT)
Book1: Unit 5 Into the Wild
Period 2 The Monarch’s Journey
Learning objectives
1. know what is the animal migrations.
2. learn how to find out the main idea of a passage.
3. Learn to work in groups and complete the tasks.
Lead in
What happened in the video
Animal migration
What’s the animal migration
Animal migration refers to the movement of a species from one habitat to another in response to seasonal changes to the environment.
Before reading
Look at the pictures and choose the animals that migrate.
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While-reading
Please read the passage quickly and answer the following question:
1. What is the main idea of the passage
2. Where are you most likely to find the passage
1.What is the main idea of the passage
A. The monarch’s migration.
B. The reasons for monarch’s migration.
C. Mexico’s monarch.
The main idea of a passage can be found from its title, the topic sentence, or even the pictures.
Tips :
The topic sentence
Title
2. Where are you most likely to find the passage
A. In a scientific research paper about the monarch butterfly’s migration.
B. In a popular nature magazine introducing the
monarch butterfly.
C. In a travel leaflet encouraging people to visit
North America.

Read the passage again and answer the questions.
1
Why do they migrate
When and where do they migrate
2
They migrate to find food, seek a partner, or in search of warmer weather.
Every autumn, they manage to travel around 4,000 kilometres south and find their way to California or Mexico.
California
Mexico
Read the passage again and answer the questions.
3
What mystery have been solved by scientists
How monarch butterflies manage to travel a long distance and find their destination.
Complete the sentences with expressions from the passage. Then use sentences to complete the “cause-effect” flow chart.
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
position of the sun
the
the places where it will spend the winter
d
c / a
a/c
b
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.
h
cut down
natural environment of many places
kill the plants
has crashed
(by as much as 90 per cent)
e / g
g/ e
f
After reading
1. What impresses you most about the monarch butterfly
2. What can people do to help protect the monarch butterfly
Group discussion
Homework
Write a composition about how to protect animals.
（80 words）
You can use these expressions：
in danger、 hunt for、air pollution、 plant tress
climate change、 ecosystem balance、 elevate the public awareness
Greenhouse effect、 wind energy 、 reforestation
Thank you！

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