Unit 1 Great scientists-Extensive reading 课件.ppt

Match the people with their achievement Da Vinci Don Quixote  Galileo Hamlet Cervantes Free Fall Experiment Shakespeare Mona Lisa 哥白尼(Nicolaus Copernicus, 1473-1543), 波兰天文学家、日心说创立者, 近代天文学的奠基人。 We all know something about Copernicus. He was one of the first scientists to use mathematical observations to collect information. He believed the sun is the center of the universe and the earth and other planets goes around it. The chart on P.7 shows his theory. Copernicus’ Revolutionary Theory 1497 Began observations of the Sun, Moon, and planets 1514 Wrote Commentariolus, an outline of his astronomical ideas, but did not circulate it widely 1543 Published De Revolutionibus Orbium Coelestium (On the Revolutions of the Celestial) 3. Copernicus didn’t show his new theory to his friends until he completed it. 4. His friends were not interested in his ideas. Dear Nicolaus Copernicus, I am a student studying astronomy and I would very much like to read your new theory about the solar system. I hope you will publish it for several reasons. I know your observations have been very carefully carried out over many years. Now you must have the courage to publish them. Science can never advance unless people have the courage of their beliefs. 用适当的介词填空。 1. The quarrel led __ the fighting between the two villagers. 2. He is always positive _____ trying new ideas. 3. His father is very strict ____ him and strict __ his studies too. 4. We should base our theory __ fact. 5. The photo calls up the memory of his childhood __ times. 6. According to my point __ view, we should stick to our plan. What’s Euler’s puzzle? Koningsberg is an island and there is a river breaking it into two parts. The first stage in his research is to find the problem that he could cross six of the bridges without going over a