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从数学课本知识的表层挖掘深层次的知识点是深化教学改革研究的重要课题,如果片面地理解抓纲靠本,势必导致照本宣科,教条地围绕课本逐条逐句,造成课本上的知识背熟了,练习、习题做遍了,但考试不尽人意,笔者在教学实践中求索尝试,认为全面透视教材,从课本表层知识为基础,引导学生探求其深层次知识点是提高教学质量,培养思维品质,发展能力的有效途径,下面以初中《代数》第四册“余弦定理”的教学实践,说说找的一些具体做法。一分析课本教材余弦定理是初中数学中的重要内容,涉及面广,
Digging deeper knowledge points from the surface of mathematics textbook knowledge is an important issue in deepening the teaching reform research. If one-sided understanding of mastermind is the basis of this, it will inevitably lead to persuasively and dogmatically revolving around the textbooks, resulting in knowledge of the textbooks. Practices and exercises have been done all over the world, but the exams are not satisfactory. In the teaching practice, the author seeks to try and think that a comprehensive perspective of the teaching materials, based on the knowledge of the surface of the textbooks, guides students to explore their in-depth knowledge to improve teaching quality and foster thinking quality. In order to develop effective capabilities, we will use the teaching practice of Cosine Theorem in the fourth edition of junior high school algebra to talk about some specific practices. An analysis of textbook textbook cosine theorem is an important part of junior high school mathematics, covering a wide range of