劉寒從

Ⅰ. The type of the lesson---reading level

Ⅱ. Analysis of the teaching material

This unit is mainly about astronomy， and the reading passage talks about the development of life on the earth. It shows how life began on the earth by explain a widely accepted theory that the universe started with a Big Bang. The text is well organized in the order of time， and clearly shows the process of how life developed on the earth. As a topic related to science and astronomy， the students have great interests in it. This will help the student to learn about the process of the development of life on the earth.

Ⅲ. Analysis of the students

This is the second term for the students in Senior High School， so they have adapted to the study in High School. Although this passage is about science， students will be interested in the topic and eager to explore more. At the same time it is also a little hard for the students to understand. Lots of words&expressions about science and biology are involved.

So， I will pay attention to the students in different levels， in order to make everyone experience the happiness of learning.

Ⅳ. Teaching aims

Knowledge objectives：

1.To learn about the key words and expressions in this passage use them in proper situations.

2.To know how life began on the earth and try to talk about the process of the development of life on the earth.

Ability objectives：

1.To practice the students reading ability， especially their prediction skimming and scanning ability.

2. Student are able to retell the process of the development of life on the earth in English.

Emotional objectives：

1. To arouse students desire of learning about science and astronomy.

2. To encourage students to protect the earth.

Ⅴ. Important points and difficult points

Key points：

1. The practice of improving students ability of reading skills.

2. Get the students to catch the main idea of the passage and to know how life began on the earth..

Difficult points：

To use what have been learned to express how life began on the earth.

Ⅵ. Teaching methods

Task-based Language Learning

Communicative language learning

Ⅶ. Teaching aids

PPT multi-media

Ⅷ. Teaching procedures

Step 1： Lead-in

Enjoy some pictures and know different lives on the Earth.

Students will discuss about how did humans come to the earth？

Step 2： Scanning and Skimming

Students will read the passage on quickly.

Task1： Try to match the right main idea of each paragraph.

Task2：How many parts can the passage be divided into？

Paragraph 1 A Widely accepted theory about how the universe was formed.

Paragraph 2 The formation of the earth.

Paragraph 3 The importance of water for life.

Paragraph4 The development of plants and animals on the earth.

Paragraph 5 The arrival of humans and their impact on the earth.

Step 3： Detailed reading

Students will watch a short video about the origin of the Earty， then read part 1 carefully and complete different designed activities.

Part 1（para1-3）： The development of the earth.

Task1. Let students read this part carefully and find out the answers.

Task2. Sum on The development of the earth.

List what happened in the order of time.

Task3. Retelling

Retell the process of the development of the earth according to the passage and the picture I give.

Part 2（4-5）： The development of life.

Students will watch a short video about the development of life on the Earty， then read this part 2 carefully and complete different designed activities.

Task1.

（1）What life developed after water appeared？

（2）What life developed in water next？

（3）What life developed after the life in water？

（4）What life developed next on land？

（5）The green plants grew into forests

（6）What life developed after forests appeared？

（7）What life developed after dinosaurs？

（8）What life developed after mammals？

Task2. Make a timeline of the development of life

Task3. Read para. 5 carefully and find out the answer.

（1）.What problem is caused by human being？

They caused global warming