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【课前思考】《蝙蝠和雷达》是人教版小学语文第八册“大自然的启示”一组课文中的篇目。这是一篇很有意思的科普知识短文,介绍了仿生学的运用——飞机雷达是从蝙蝠夜间飞行的原理中得到启示而发明的。课文结构框架简单,说明思路清晰,逻辑性强。教材选编的意图,是为了让学生在阅读中抓住要点,准确把握文章的主要内容,拓宽视野,激发学生阅读科普文章的兴趣。通过对本课的学习,教师应该让学生感受到这种科普文用词精准、文情并茂等特点,引导学生关注并学习这类文
[Thinking before class] “Bat and Radar” is the eighth book of the PEP Edition of Chinese “Apocalypse of Nature,” a series of texts. This is a very interesting essay on popular science that describes the use of bionics - the invention of the aircraft radar, inspired by the theory of night-time flying bats. The structural framework of the text is simple, indicating clear thinking and strong logic. The purpose of textbook selection is to enable students to grasp the main points in reading, accurately grasp the main content of the article, broaden their horizons and stimulate students’ interest in reading popular science articles. Through the study of this lesson, teachers should enable students to feel the precise words of this popular science, literary grace and other characteristics, to guide students to focus on and learn this kind of article