Unit 3 Inventors and inventions Warming up and Reading I 课件（32张）

课件31张PPT。Period 1&2 Warming up and Reading IUnit 3 Inventors and inventionsWhen we speak of inventions, we can’t help thinking of the four great inventions in ancient China. Can you name them?Warming upthe four great inventionspaper-makingprintingcompassgunpowderHow many famous inventors do you know? What did they invent? Zhang Heng (78—139)Seismograph Thomas Edison America (1847———1931)Electric bulb What is he famous for?Issac New ton 艾萨克·牛顿 gravitydiscoveredradiumMadame Curie 玛丽亚·斯克沃多夫斯卡-居里 discoveredWhat is she famous for? A discovery is merely making known something that already exists in nature. An invention is something that is created by a human being.A discovery = =An inventionPlease look at the following pictures and decide which are discoveries and which are inventions An amphibious carIt’s _____ an invention.Columbiathe New ContinentIt’s _____ a discovery.1493,3,15Stephenson’s “Rocket”It’s _____ an invention.DNAIt’s _____ a discovery.Reading The problem of the snakesThe text is mainly about the writer ’s experience in helping her mother get rid of the _____ and applying for the _____ for her invention. snakespatent Read the text quickly and complete its main idea.Divide the passage into several parts and find out the main idea for each part.Part 3 (para.3)D. Deciding on the solutionPart 4 (para.4-6)C. The attempts to catch the snakesPart 5 (para.7-8)B. The requirements of getting a patentPart 2 (para.2)Part 1 (para.1)A. Doing some research about the habits of snakesE. The discovery of the problem of the snakesThe mother was upset because a family of snakes had made their home near the house. What was the mother upset about?1. Read and answer the questions.para1Find the problem 2. Choose the best answers. What's the problem that the writer came across? A．Snakes came near her house now and then. B．Snakes seemed to have made their home near her house. C．How to catch the snakes without harming them. D．Her mother felt upset.Para2 Doing researchhabitsproducts2．Why did the writer not use powders to solve the problem? A．Because it was an old thought pattern to use powders. B．Because that would harm or even kill the snakes. C．Because that would damage something else near the house. D．Because she wanted to invent something new.habitattrapcoolinglast /thirdperfumebe easily caught1. How did the writer catch the snakes? A. using something the snakes were interested to attract them into a trap. B. taking their habitat to another place. C. placing the snakes at a low temperature for them to sleep and then caught them. D. All the above. CRead Paras 4--6carefully and choose the best answer.2. The writer was successful to catch the snakes in ____ attempt. A. the first B. the second C. the third D. everyC3. The following are used in the three attempts EXCEPT ____. A. perfume B. a bowl C. jelly D. ice-cubesA1. If you have a scientific theory or mathematical model，you can get a patent. 2. An inventor can easily ... ...