新外研版八下M3 Unit 2 We have not found life on any other planets yet (6).ppt

2021 年 “精 英 杯” 全国公开课大赛 获奖作品展示 教育部“精英杯”公开课大赛简介 2021年6月，由教育学会牵头，教材编审委员会具体组织实施，在全国8个城市，设置了12个分会场，范围从“小学至高中”全系列部编新教材进行了统一的培训和指导。每次指導，都輔以精彩的優秀示範課。在這些示範課中，不乏全國名師和各省名師中的佼佼者。 他们的课程，无论是在内容和形式上，都是经过认真研判，把各学科的核心素养作为教学主线。既涵盖城市中小学、又包括乡村大部分学校的教学模式。適合全國大部分教學大區。本課件就是從全國一等獎作品中，优选出的具有代表性的作品。示范性强，有很大的推广价值。 Unit 2 We have not found life on any other planets yet. There are more than 200 billion stars in the Milky Way. 在银河系中有超过2000亿颗恒星. Yuri Gagarin, Soviet Union 12, April,1961 Who is he? He is China’s first astronaut. He is an astronaut (宇航员) spaceship 宇宙飞船 Learning aims 1、能够读懂以太空为主题的简单文章， 了解一定的太空知识。 2、能够理解运用现在完成时的文章。 We have not found life on any other planets yet. They have ever sent spaceships to travel outside the solar system. 3、培养对天文知识的兴趣和对未知事物 的探索精神， Discussion How many planets are there in the universe? 2. Is there any life on other planets? Is there any life on other planets? The earth: Other planets: We have not found yet. There has been life for hundreds of millions of years. Put them in order: small-—large galaxy planet solar system 星系 行星 太阳系 star universe 恒星 宇宙 --universe 宇宙 planet 行星 ---star 恒星 ---solar system 太阳系 ---galaxy 星系 planet 行星 star 恒星 planet The earth is a _______ and the sun is a _____. The earth goes around the sun. There are ______ planets around the sun. star eight Seven other planets also go around the sun. None of them has an environment like that of the earth, so scientists do not think they will find life on them. 科学家们认为，在这些行星上不会发现生命。 The sun and its planets are called the solar system, and our solar system is a small part of a much larger group of stars and planets, called the Galaxy or the Milky Way. There are billions of stars in the Galaxy, and our sun is only one of them. 3.There is more than one galaxy in the univers