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(一)教学目的的确定《蜘蛛》一文的内容,学生不难理解,对蜘蛛这样的小生物,学生也比较熟悉,但写这类说明文,学生往往不知从何处着笔,向何处扩展。如何抓住特点,选择恰当的角度对这类常见事物进行细致的观察?如何去芜存精,在众多的材料中理出一条说明的主线?如何由表及里,从生物的生活形态起笔写到它的生理机能,给读者以新鲜而有价值的知识?在语言运用上,又如何将说明、记叙和描写揉合在一起,使说明既条理清晰,又生动有趣,《蜘蛛》这篇课文,正好在上述几方面给我们提供了一个范例。为此,本课的教学目的确定为——
(1) Determination of Teaching Objectives It is not difficult for the students to understand the content of the “Spider” article. Students are familiar with such small creatures as spiders. However, when writing such explanations, students often do not know where to write and where to expand. How to grasp the characteristics, choose the right angle to observe these common things in detail, how to survive, how to formulate a main line of explanation in many materials, and how to write from the surface of the living form of living creatures. To its physiological function, to give the reader fresh and valuable knowledge? In the use of language, how to combine explanations, narratives, and descriptions together so that the explanation is clear and vivid, and the text of the book “The Spider” This just gave us an example in the above aspects. For this purpose, the purpose of teaching this lesson is determined as -