Unit 1 Great Scientists Period 3 using language Learning aims: 1. Enable the students to learn about the development of astronomy.2. Learning about Copernicus’ revolutionary theory.Important point: To grasp some important and useful words, expressions and sentence patterns.Difficult point: To improve the skills of reading.使用说明及学法指导：1. 通过阅读课本 P30，完成预习案。2. 完成时间：20 分钟。预习案 Previewing CaseTask 1 Read the text and match the main idea of each paragraphPara.1 The result of Copernicus’ studyPara.2 The procedure of Copernicus’ study Para.3 Copernicus’ theory replaced the Christian idea and proved correctPara.4 The background of Copernicus’ study Para.5 The cause of Copernicus’ study Task 2 Careful readingPara 1: (1) What was his theory about? _________________________________________________________(2) Why could he not tell about his theory? _______________________________________________________Para 2: Fill in the blanks according to the passage They had noticed that some planets in the sky seemed to (4) ___________, (5) ___________and then (6) ____________ in a loop. Others appeared brighter (7) ____________and less bright at others. This was very stranger if all the planets (8) _______________ the earth.Para 3: (9) What did Copernicus do to complete his theory? _____ A．He thought hard for a long time. B．He collected observations of the stars. C．He used all his mathematical knowledge. D．All of the above.Para 4&5: True or False(10) Copernicus didn’t show his new theory to his friends until he completed it. ( )(11)He placed the fixed earth at the centre of the solar system with the planets going round it and only the moon still going round the sun. ( )(12) His friends were not inter...
