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小学数学第八册列方程解应用题一节中的例题知习题,其解答程式与算术解法的解题步骤有着根本区别。怎样帮助小学生理解解答的思维方法,掌握设未知数和列代数式的要领,找到数量之间的等量关系?现就自己的体验概括为如下三个方面。一、通过多种途径,加强列代数式的基本训练与布列方程的准备。一道应用题所列的方程,犹如一台整装好了的机器。方程中有关数量的含未知数的表示式是它的部件,依据等量关系布列的方
Elementary mathematics eighth column equation solution application problem section of the example of the problem-solving exercises, the answer program and the arithmetic solution of the problem-solving steps are fundamentally different. How to help pupils understand the way of thinking of solutions, grasp the essentials of setting unknowns and algebraic numbers, and find the same amount of relationship between? The experience is summarized in the following three aspects. First, through a variety of ways to strengthen the basic algebraic training and the formulation of the Brent equation. The equations listed in an application question are like a fully equipped machine. The number of unknowns in the equation is its part, the square