约20110字。

　　Unit 3 Inventors and Inventions
　　Warming Up Pre-reading, Reading
　　Teaching Goals:
　　1. To learn about the difference between a discovery and an invention 2.To arouse Ss’ interest in learning about the stages of an invention 3.To develop Ss’ some basic reading skills.
　　4.To develop Ss’ ability to discover and solve the problems and cultivate Ss’ creativity and imagination.
　　Teaching Procedures: Step 1. Warming Up
　　Purpose: To arouse Ss’ interest in learning about the difference between a discovery and an invention
　　Get Ss t to guess what the invention is or who the inventor is in groups
　　Question 1:
　　It`s made of plastics and metal. It looks like a small box.
　　The invention can contact someone while you are on the move.
　　Suggested Answer: Mobile phone.
　　Question 2:
　　The inventor is from America.
　　He is one of the father of inventions. The inventor invented the bulb.
　　Suggested Answer: Edison
　　2. Get Ss to tell as many the inventions they know as possible in groups.
　　3. Ask Ss to look at the pictures on P19 and answer the following questions.
　　(1) Which of the pictures is an invention?
　　(2) Which of the pictures is a discovery?
　　4. Get Ss to discuss the difference between the inventions and a discovery and give a definition of them and give some examples of each category.Suggested Answer:
　　An invention is something produced for the first time through the use of imagination or ingenious thinking and experimentation.
　　A discovery merely makes known something that already exists in nature.
　　Step 2. Pre-reading
　　Purpose : To get Ss to be aware of the connection between inventing and the scientific process.
　　1. Let Ss work in pairs and decided what the first and most important stage is to make an invention.
　　2. Ask Ss to finish the exercise of Pre-reading on P19 and then check the answer in pairs.
　　Step 3. Leading-in
　　Purpose: Arouse Ss’ interest in the text and encourage Ss to imagine the content of the text. Ask Ss to predict in pairs the content of the text based on the title and pictures.
　　Step 4. Fast reading
　　Purpose: To get Ss to have a brief understanding of the text
　　1. Ask Ss to read the text quickly and try to get the main idea of the whole text.
　　Suggested Answer:
　　The text narrates the problem of the snakes and presents the procedures of catching them and applying for a patent
　　2. Get Ss to divide the passage and wort the main idea for each part. Part I (Para 1): The discovery of the problem of the snakes.
　　Part II (Para 2～3): The research on the approaches to solve the problem.
　　Part III (Para 4～6): The attempts to catch the snakes. Part IV (Para 7～8): The requirement of getting a patent.
　　Step 5. Intensive reading
　　1. Ask Ss to read the text carefully and find out which paragraph or paragraphs deal with each inventing process in the passage and find the examples:
　　Suggested Answer: