Unit 4 Creatures large and small优质课教案

Unit 4 More reading: The mystery of hibernation (the first period)

汪玮

Cognitive Objective:

Students learn about what hibernation is all about from a science magazine; Students know the difference between hibernation and half hibernation;

Students discover how and where three hibernating creatures hibernate; Skills Objective:

Students skim for main ideas and scan for specific details; Students summarized the mystery of hibernation based on their understanding and preview work. Affective Objective:

Students learn the importance of animal hibernation, and don’t disturb a hibernating animal when it is hibernating.

Teaching aids: Multimedia

Procedures:

I. Pre-reading Lead-in 

Animal riddles: I am a frog/bat/bear

(with clues) 

What do they have in common?

They all hibernate. (Lead into the topic of today.) Look at the pictures and answer the following questions: 1.Which types of animal hibernate?

Cold-blooded animals. 2.Which types of animal do not hibernate?

Some warm-blooded animals . 3.Which animals half-hibernate?

Bears and squirrels , for example. 4. When does hibernation occur?

In winter. 2. Hibernation is ___________________________________.

3. Why do creatures hibernate in winter ? To survive the cold weather and the absence of food .

II. While-reading: A. Skim the text and use one word to describe each paragraph. (mind map) B.

Scan the text, focusing on the 2nd, 3rd and 4th paragraph. 1.

Find out the topic sentence. 2.

When, where and how do the three hibernating creatures hibernate? (Key phrases and pictures) 3.

Finish the mind map and the table regarding each paragraph C.

True or False 1.

All the hibernating animals look dead in winter. 2.

Creatures hibernate only because they can’t find food.

3.

While hibernating, the bats slow down the pulse and breathing rates in order to keep up the body temperature. 4.

Hibernating bats hang with heads at the bottom and tails at the top.

5.

While hibernating under a pond, frogs move around sometimes and breathe through their

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skins. 6.

If a bear is disturbed during hibernation, it can’t wake up at once.

III. Post-reading: A. Summary Bears, bats and frogs have something in _______. They all _________ in order to ______ the cold weather and the ________ of food.

During hibernation, the animals’ body temperature ______, and their heartbeat and breathing

rates ______

______. They go to sleep in different kinds of places. Bats live in a _____, bears use ____, frogs go through under the ____, and many other animals dig holes in the earth.

B.

Retell the mystery of hibernation.

How mysterious it is for animals to hibernate?

Assignments: 1.

Polish the summary of the text based on what you’ve learnt in this period; 2.

Preview key words and sentence patterns.

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