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什么是化归思想呢?把一个复杂的、陌生的问题,转化为简单的、熟悉问题来解决的思想称为化归思想。化归思想包含三个要素:①把什么东西进行化归,即化归对象;②化归到何处去,即为化归目标;③如何进行化归,即为化归的方法,下面仅以高一部分内容分代数、立体几何两方面举例说明。 一、化归思想在代数教学中的应用 高一代数处处蕴含着化归思想,教材中的函数是初中函数概念的引伸,幂函数、指数函数、对数函数是初中幂运算、指数运算、对数运算的拓宽,任意角的三角函数是初中解三角形的推广,由于教材本身存在着
What is the idea of returning to a society? Turning a complex, unfamiliar problem into a simple, familiar solution to the problem is called transformation. The idea of returning to the Gospel consists of three elements: (1) returning what is returned to the object; (2) returning to where it belongs to; (2) returning to the Goal; Take the high part of the contents of subalgebra and three-dimensional geometry as examples. First, the application of the idea of returning to algebra in the teaching of algebra implies that the idea of returning to ancient generations is everywhere. The function in the textbook is an extension of the concept of the junior high school function. The power function, the exponential function, and the logarithmic function are the middle-school exponentiation operations, exponential operations, and The widening of the number operation, the trigonometric function of any angle is the promotion of the triangular solution of the junior middle school, because of the teaching material itself