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算理作为计算的理论依据,是由数学概念、性质、定律等内容构成的数学基础理论知识,为算法提供了理论指导;而算法作为实施计算的基本程序和方法,使得算理具体化。学生在学习计算的过程中明确了算理和算法,就便于灵活、简便地进行计算。一、创设情境,让学生在数学情境中理解算理学生对算理的理解应在一定的情境中,结合具体问题(算式)进行理解,要充分利用实物演示(或操作),激发学生的学习内在需要,把学生引入到身临其境的环境中去,自然地生
As the theoretical basis of calculation, arithmetic is the mathematical basic theory composed of mathematical concepts, properties and laws, which provides theoretical guidance for the algorithm. As the basic procedure and method of calculation, arithmetic makes the calculation concrete. Students in the learning process of calculating the clear calculations and algorithms, it is easy and flexible to calculate. First, the creation of situations for students to understand mathematical situations Mathematical students understand the theory of mathematics should be in a certain situation, combined with specific problems (formula) to understand, to make full use of physical demonstration (or operation) to stimulate student learning Inner needs, the students into the immersive environment, naturally born