Reading and vocabulary特级教师教学实录

B 6 M 5 Cloning Vocabulary & Reading 教学内容: Vocabulary & Reading（p64-65）

教学重难点：

1.Get information about cloning and DNA including related research and its prospect;

2.Grasp related new words and expression such as “be identical to, controversial”. 3.Know how to deal with a scientific article with many new words; 教学步骤：

Crazy Reading

Words and phrases from

acid

to code

(page151-152)

Pre-reading Step 1 Warming-up Step 2 Science quiz True or False.

1. Dolly is the first cloned mammal.

2. A Clone is an organism with two parents.

3. You can see through the structure of DNA, because like glass and water, it is transparent.

4. There are no natural clones among us right now. Step 3 Words learning structure

fingernail

acid DNA upbringing

experience

stem cell unzip

identical

enzyme genetic

plant While reading Step 4 Scanning Scan the passage and find out the scientific terms. Underline your answers in the passage. What is DNA\ a clone\ an enzyme\ a stem cell?

Step 5 Fast reading

Part 1: Paragraph

.

Cloning and DNA

Part 2: Paragraph

.

Part 3: Paragraph

.

Page 1 of 3

Step 6 Careful Reading Read part 2 and fill in the blanks. “Cloning technology is a double-edged sword.”

Advantages

Disadvantages

… an ________ treatment for

couples …suffer from unknown psychological who can’t have children

…reproduce the talents of

human beings …obtain stem cells in embryos which are many people find the wasted embryo very __________and can develop into ______________ every other type of cell …be ________ to clone a prize

cow

…would

__________ the biodiversity of resisting bacteria or disease Post reading Competition Step7 Summary How to deal with vocabulary in Science Essay Reading? 1. Known words：

2. Scientific terms

Learning to learn While reading a science essay, there is no need to know the Chinese meaning of scientific terms, or to spell it correctly .You can always get the information you need from the context. 3. word-formation：

compounding (合成法)：

affixation(缀合法)

prefixation(前缀)：

suffixation(后缀)：

Step8 Discussion Human cloning is closer than you think. Work in groups and discuss: If I am cloned…

If I am cloned, it will be beneficial, because…

Page 2 of 3 _________ … be _____________

the original one

the breed

If I am cloned, it surely is a disaster, because …

Step 9 Homework

1. Whether you are for or against cloning? Write a paragraph after class to express your idea. 2. Memorize the words with different methods. 3. Learn more about cloning and DNA.

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