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【教学过程】一、谈话导入,揭示课题师:(课前随着乐曲播放奇趣大自然的图片)课前,我们跟随画面走进大自然,谁来说说,你看到了什么?生:我看到了海底美丽的珊瑚。生:我看到了浩瀚的宇宙。生:我看到了三叶虫化石。生:我看到了清晨挂满露珠的小草。师:是啊,大自然多神奇多有趣啊!它召唤着我们去观察,去研究。自然中的万事万物不仅美,还提供着丰富的信息。前苏联著名科普作家伊林写了一篇科学小品文,形象地将它们称为——"大自然的文
【Teaching process】 First, talk to import, reveal the subject division: (Before class with the music play Trolltech nature picture) Before class, we follow the picture into the nature, who say, what do you see? Health: I saw the beautiful coral on the sea. Health: I see the vast universe. Health: I saw trilobite fossils. Health: I saw the grass covered with dew in the early morning. Teacher: Yeah, how amazing is the magic of nature! It calls us to observe and study. Everything in nature is not only beautiful, it also provides a wealth of information. The famous Soviet popular science writer Ilyn wrote a scientific essay, vividly called them -