论文部分内容阅读
在小学阶段,几何初步知识应用题的内容很丰富。如何让学生掌握好几何初步知识,是一个值得探讨的问题。在连续七届毕业班的教学实践中,我利用简单的代数式计算圆柱体的表面积,取得较好的效果。教材安排的教法分三个步骤完成:(1)求圆柱体的侧面积;(2)求圆柱体的底面积;(3)求圆柱体的表面积。此种方法,仅用数字来表示各量之间的关系,缺乏概括性,学生容易混淆。针对这
In the elementary school stage, the application of geometric preliminary knowledge is rich in content. How to make students master the preliminary knowledge of geometry is a question worth exploring. In seven consecutive graduating class teaching practice, I use a simple algebraic calculation of the cylinder surface area, and achieved good results. Textbook arrangement of the teaching method is completed in three steps: (1) find the side of the cylinder area; (2) find the bottom area of the cylinder; (3) find the cylinder surface area. This method, only the figures to indicate the relationship between the amount of lack of generalization, students easily confused. Against this