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数学计算概念是整个计算概念体系的起始点,又是数学几大体系的综合点,因此,计算概念教学在小学数学教学中起着举足轻重的作用。有效的计算概念教学策略将直接影响学生主动建构概念的过程与结果。但在实际教学中,很多教师往往重视算法教学,忽视学生对运算的意义及算理的感悟,导致学生仅仅知道算式的形式和得数,而不知道算式的本质意义。本文结合笔者执教《乘法的初步认识》为例,从学生实际出发,提出了如何提高小学数学计算概念教学的一些想法和建议:提供感性材料,建立清晰表象;主动建构意义,凸显概念本质;设计精当练习,优化巩固概念。
The concept of mathematical calculation is the starting point of the whole conceptual system of calculation and the synthesis point of several major systems of mathematics. Therefore, the concept teaching of calculation plays a decisive role in the teaching of elementary mathematics. Effective calculation of the concept of teaching strategies will directly affect the students take the initiative to construct the concept of the process and results. However, in practical teaching, many teachers tend to emphasize algorithm teaching, ignoring the students’ meaning of arithmetic and arithmetic comprehension, which leads students to know the formal form and the number of the form only, without knowing the essential meaning of the form. In this paper, the author coaches the “multiplication of a preliminary understanding of” as an example, starting from the students, put forward some ideas and suggestions on how to improve the concept of primary school mathematics teaching: to provide perceptual material, to establish a clear appearance; to take the initiative to construct meaning, highlight the concept of essence; design Exquisite practice, optimization and consolidation concepts.