近年来,随着教学改革的不断深入发展,学具的运用日益引起广大数学教师的重视。通过学具来学习计算,特别是通过学具来学习几何知识,有利于培养学生的空间观念和抽象思维的能力,也有利于培养学生的操作能力。下面介绍一种简单的“拼图板”的制作方法。先叫学生每人准备一块长22厘米,宽16厘米左右的 In recent years, with the continuous deepening of teaching reform, the use of learning tools has drawn increasing attention from the majority of mathematics teachers. Studying and calculating through learning tools, especially learning geometry knowledge through learning tools, is conducive to cultivating students 'ability of space concepts and abstract thinking, as well as cultivating students' ability to operate. Here's a simple “puzzle board” production method. First call each student to prepare a piece of length 22 cm, width 16 cm or so