高三英语上学期Unit 4 Green world第二课时教案-高三英语教案

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The Second Period  Integrating skills
 
Teaching Aims:
1. Train the students’ integrating skills, especially reading and writing skills.
Teaching Important Points:
1.Understand the passage exactly and learn about Alexander Fleming and his discovery—penicillin.
2.Train the students’ reading and writing ability.
Teaching Difficult Point:
How to help the students write a good article for a journal.
Teaching Methods:
1.Free talk to present some information about the passage to the students, so as to make the students interested in it.
2.Instructing method to help the students write an article.
3.Individul, pair or group work to make every student finish the given tasks better.
Teaching Aids:
1.the multimedia   2.the blackboard 
Teaching procedures
step 1 Scanning
Find out the important people mentioned in the text.
Charles Darwin From England     Gregor Mendel From Austria
Gote Turesson From Sweden
Choose the best answers according to the passage
1. The research by Darwin, Mendel and Turesson shows that_     .  C 
A. genetics is more important than the environment to plants
B. genetics is less important than the environment to plants
C. both genetics and the environment are important to plants
D. neither genetics nor the environment is important to plants
2. Darwin observed that the birds with _    _ would eat_      .  B 
A. small beaks l hard seeds B．broad beaks；hard seeds
C. hard beaks；hard seeds D．broad beaks；soft seeds
3.Darwin joined the scientific expedition on _____ ． C
A. the Endeavour  B.Tahiti  C．the Beagle  D．space
4. Scientists of the nineteenth century believed that             .  D
A．the development of new species was behind the influence of the environment
B．the development of new species and the influence of the environment were hand in hand
C．the development of new species had nothing to do with the influence of the environment
D the influence of the environment was behind the development of new species .
5. Darwin studied physics，chemistry and botany because_________ .       B
A．he was invited to join scientific expedition
B．he was interested in them
C．he could do a lot Of experiments
D．he wanted to finish his book“On the Origin of Species”
Fill in the following blanks

Scientist <?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />

Research/experiment

Result

 

Charles Darwin

 

The wild life of Galapagos, many varieties of garden roses

 

There were differences between the species of the different islands’yet all showed a clear relationship with those of <?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" />America’ differences in habitat could lead to different species in birds as well as in plants.

 

Gregor Mendel

 

 

 

Flowers and peas

 

Many characteristics were passed on from one generation to the next, without influence by the environment. His research gave  birth to the science of genetics.

 

 

Gote Turesson

 

 

A wild plant found on the Swedish west coast

 

Found evidence for the existence of stable varieties within species in nature. He showed that differences between plants of one species occurred as a result of the environmental conditions in their habitat.

The text can be divided into four parts
Part I Pa1-3:   Darwin and his research.

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