课件21张PPT。Unit 3Inventors and inventions Inventions in the 20th centuryWhich invention do you think is the most important one? Why?EdisonHe was a great American inventor. During his life, he made many inventions, such as the electric bulb. But a lamp can’t give light without the discovery of electricity.Warming up(1) A discovery is
A discovery merely makes known something that already exist in nature.(2) An invention is
something that created by human being.discoveriesinventions≠→﹛Stephenson’s “Rocket”An amphibious carDNA１２３DNA Do you know the stages every inventor must go through before they can have their invention approved? Here give you some similar stages used in research, please out them in the suitable order.Pre-reading Applying for a patent
2. Finding a problem
3. Doing research
4. Testing the solution
5. Thinking of a creative solution
6. Deciding on the invention ReadingThe problem of snakes策划：《学生双语报》10skimmingThe main idea of each part.Part 1(para. )Part 2(para. )Part 3(para. )Part 4(para. )the discovery of the problem of the snakesthe research on the approaches to solve the problemthe attempts to catch the snakesthe requirements of getting a patent 1 2.34.5.67.8234.5.67removed harmedwayshabitsthreeonethreeefficiently recognized1scanningQ 1. What are the three creative steps that the writer takes to catch the snakes without hurting them?Q 2. Why did cooling the snakes make them less active ?Careful readingComprehending 1. The purpose in writing this text is
A. to show us how to trap the snakes but not to kill them
B. to tell people how to apply for a patent of the writer's new idea
C. to introduce the writer's new idea of trapping the snakes and her application for a patent
D. to tell the readers how to get a new idea and make it a patentA. it makes the snakes move slowly
B. it makes the snakes hardly bite us
C. it is easier for us to kill the snakes without hurting ourselves
D. it is easier for us to catch the snakes without killing them2. The biggest advantage of the writer's new idea is that:3. What instruments were used for catching the snakes?A. a bowl, ice-cubes, male perfume
B. a bowl, a bucket, female perfume
C. a small net, ice-cubes, a bucket
D. a small net, a bucket, powders4. Which statement is true according to the text?A. The snakes were so sleepy in the second attempt that they couldn't bite the writer at all.
B. Your product must be different from everybody else's if you want to receive a patent.
C. The writer decided to send her invention to the patent office the moment she succeeded in catching the snakes.
D. If an application for your product proves to be valid, you can get a patent immediately.5. According to the text, which subject do you think can be given a patent?A. A new star discovered by a scientist.
B. A new novel written by Huo Da.
C. A new way to make dirty water clean.
D. A new kind of grass found in a mountain which can be used as a medicine.discussionDiscuss with your partner what the advantages might be of getting a patent.
Read the text again and find out any difficult sentences.
Finish Ex. 1&2 on page 23Homework
1) to put the frozen bowl over the snakes’ habitat in the morning.
2) to put the frozen bowl over the snakes’ habitat in the evening.
3) to put the frozen bowl over the snakes’ habitat in the evening and carry a net to collect the snakes without harming them the next morning.
The cooling made the snakes less active because they are reptiles and their body temperature depends on the heat around them.
