冀教版九年级全册Unit 5 Look into Science Lesson 29 DNA-The Story of You教案

1、Lesson 29DNA-The Story of YouTeaching aims:1. To listen and understand the passage about DNA.2. To learn some key words and useful phrases.3. To do some practice.Teaching key points and difficulties:Some key words and useful phrases.How to use these key points.Teaching methods: listening, speaking,

2、reading, discussing.Teaching procedures:Step 1. Leading-inUse a picture of twins to lead in the new lesson.Step 2. Checking PreviewRead the lesson and answer the questions.1. What is a blueprint?A blueprint is a drawing that shows how to put a house together with many different parts.2. Which is mor

3、e complex, building a living thing or building a house ?Building a living thing is far more complex than building a house.3. Do some twins have the same DNA?Yes, some twins have the same DNA.4. Is it possible to change your DNA?Yes, it is. In the future, scientists might be able to change our DNA.5.

4、 Whose DNA is related to yours?People who are related to you. For example, your parents and grandparents.Step 3. Questioning and Discussing1. Listen to the tape carefully.2. Students read the text by themselves.3. Work in groups and find out the phrases in this text.4. Teacher explains the phrases.

5、in general 总的来说，一般而言 except for 除之外 for example 例如 the same as 和一样 not onlybut also 不但而且 be related to 与有关Step 4. Exercise . Fill in the blanks with the phrases in the box.in general except for not onlybut alsorelated to even if the sameas1. Your homework is quite good_ a few spelling mistakes.2. _

6、the young _ the old like pop music.3. Kates hair is _colour _ her sisters.4. _, women live longer than men.5. _many difficulties remain, we can overcome them.6. Is wealth _happiness?. 根据汉语意思，用所学短语完成下列句子。1. 总的来说，人们不喜欢被捉弄。 _, people dont like to be made fun of.2. 除了两处拼写错误之外，这篇文章很好。 The article is good _ two spelling mistakes.3. 你的想法和我的一样。 Your thought is _ mine.4. 他即使有钱也不会买它。 _ he had the money, he wouldnt buy it.Step 5. Summary What do you learn from this lesson?Homework: 1. Recite the words and expressions in Lesson 29.2. Complete the rest exercise on workbook.Bd design Lesson 29DNA-The