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很多老师在教学圆柱体认识这一内容的时候,总是把它和讲求圆柱的侧面积的一堂课合在一起讲。这样做的结果,往往是对圆柱的概念教学一带而过,把主要精力放在侧面积的计算上。因而造成学生对圆柱的概念模糊不清,给整个圆柱这部分内容的学习带来了困难。实践告诉我们,十分认真地上好圆柱认识这堂概念教学课是非常重要的。下面谈谈我是怎样进行圆柱认识这堂课的教学的。第一步,让学生认识圆柱各部分的名称。
Many teachers in the teaching cylinder to understand this content, always put it and emphasize the side area of a class lesson together. The result of this is often the concept of cylinder teaching over the area, the main focus on the calculation of the area. As a result, students are obscured by the concept of cylinder, which brings difficulties to the learning of this part of the cylinder. Practice tells us that it is very important to understand this concept lesson very carefully. Now let's talk about how I got to know the teaching of this class. The first step is to get students to know the names of the various parts of the cylinder.