一、通过操作掌握概念掌握概念是数学教学的重点，也是难点。因为概念表述往往比较抽象，特别是小学低年级学生，理解能力差，对他们一般地讲数学概念，很难理解和掌握。而运用动手操作的教学手段，为学生提供丰富的感性材料，通过直观形象的操作过程，帮助学生理解和掌握... First, grasp the concept through the operation Master the concept of mathematics teaching is the key, but also difficult. Because conceptual expressions are often abstracted, especially for lower primary students, their ability to understand is poor and their mathematical concepts are generally difficult to understand and master. The use of hands-on teaching methods to provide students with a wealth of perceptual material, through the intuitive image of the operation process to help students understand and master ...