课件选修八unit3.ppt

Unit 3 Inventors and Inventions paper-making printing compass gunpowder Put the stages of inventionin suitable order 1. 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 2 3 5 4 6 1 Reading The Problem Of The Snakes Prevision What does the writer mainly tell us about? A. Introduces what the problem of snakes is B. Tells us how to get patents C. Introduces what the problem of snake is and her mother wants her to catch them. D. Introduces her idea of trapping the snakes and her application for a patent Listening :The structure of the text Paragraph Stages Find a problem Do research Think of a creative solution Test the solution Apply for a patent 1 2 3 4,5,6 7,8 Scanning Part 1 (Para 1) What was the mother upset about? 2. Why was the writer happy to help her mother? The mother was upset because a family of snakes had made their home in their courtyard. The writer was happy because it gave her a chance to help her mother and invent something to catch the snakes without hurting them at the same time. Part 2 (Para2) How did the writer do the research? She researched the habits of snakes Part 3 (Para3) How many approaches did the writer think of? Which approach did she decide to use? She thought of three approaches. She decided to use the last one. 1 What are the three creative steps that the writer takes to catch the snakes without hurting them? ① to put the frozen bowl over the snakes’ habitat ______________. ②to put the frozen bowl over the snakes’ habitat _______________. ③to put the frozen bowl over the snakes’ habit ______________and carry______ to collect the snakes without harming them the next morning. in the morning in the evening in the evening a net Para4 ( Para 4-6) 2 Why did cooling the snakes make them less active? A. Because snakes are warm-blooded animals. B. Because snakes like high temperature. C. Because